NEW YORK TIMES MAGAZINE , AUGUST 11

                 In paranoid times like- these, people
                see connections where there aren't any.
                 Why the complex science of
                 coincidence is a conspiracy theorist's
                 worst nightmare.  By Lisa Bolkin


      When the Miami Police first found Benito Que,
 he was slumped on a desolate side street, near
 the empty spot where he had habitually
 parked his Ford Explorer.  At about the same
 time, Don C. Wiley mysteriously disappeared.  His car, a
 white rented Mitsubishi Galant, was abandoned on a bridge
 outside of Memphis, where he had just had a jovial dinner
 with friends.  The following week, Vladimir Pasechnik col-
lapsed in London, apparently of a stroke.
            The list would grow to nearly a dozen in the space of four
nerve-jangling months.  Stabbed in Leesburg, Va.  Suffocated
in an air-locked lab in Geelong, Australia. Found wedged
 under a chair, naked from the waist down, in a blood-splat-
tered apartment in Norwich, England.  Hit by a car while
jogging.  Killed in a private plane crash.  Shot dead while a
pizza delivery man served as a decoy.
            What joined these men was their proximity to the world
 of bioterror and germ warfare.  Que, the one who was car-
 jacked, was a researcher at the University of Miami School
 of Medicine.  Wiley, the most famous, knew as much as
 anyone about how the immune system responds to attacks
 from viruses like Ebola.  Pasechnik was Russian, and before
 he defected, he helped the Soviets transform cruise mis-
 siles into biological weapons.  The chain of deaths - these
  three men and eight others like them - began last fall,
 back when emergency teams in moonsuits were scouring

          the Capitol, when postal workers were dying, when news agencies we
         on high alert and the entire nation was afraid to open its mail.
       In more ordinary times, this cluster of deaths might not have been no-
       ticed, but these are not ordinary times.  Neighbors report neighbors
       the F.B.I.; passengers are escorted off planes because they make other
    passengers nervous; medical journals debate what to publish, for fear the
   articles will be read by evil eyes.  Now we are spooked and startled by
  stories like these - all these scientists dying within months of one an-
   other, at the precise moment when tiny organisms loom as a gargantuan
  threat.  The stories of these dozen or so deaths started out as a curiosity
      and were transformed rumor by rumor into the specter of conspiracy
     they circulated first on the Internet and then in the mainstream media
             What are the odds, after all?
              What are the odds, indeed?
      For this is not about conspiracy but about coincidence - unexpected
       connections that are both riveting and rattling, Much religious faith
       is based on the idea that almost nothing is coincidence; science is a
      exercise in eliminating the taint of coincidence; police work is often a
     feint and parry between those trying to prove coincidence and those try-
     ing to prove complicity.  Without coincidence, there would be few movie
    worth watching ("Of all the gin joints in all the towns in all the world
        she walks into mine"), and literary plots would come grinding to
       disappointing halt. (What if Oedipus had not happened to marry his
       mother?  If Javert had not happened to arrive in the town where Vaijea
        was mayor?)
         The true meaning of the word is "a surprising concurrence of events,
             perceived as meaningfully related, with no apparent causal connection."
             In other words, pure happenstance.  Yet by merely noticing a coinci-
             dence, we elevate it to something that transcends its definition as pure
         chance.  We are discomforted by the idea of a random universe.  Like Mel
         Gibson's character Graham Hess in M. Night Shyamalan's new movie
         "Signs," we want to feel that our lives are governed by a grand plan.
             The need is especially strong in an age -when paranoia runs rampant.
         "Coincidence feels like a loss of control perhaps.,, says John Allen Pau-
         los, a professor of mathematics at Temple University and the author of
        "Innumeracy," the improbable best seller about how Americans don't
         understand numbers.  Finding a reason or a pattern where none actually
         exists "makes it less frightening," be says because events get placed in
         the realm of the logical. "Believing in fate, or even conspiracy, can some-
           times be more comforting than facing the fact that sometimes things just
         happen."
             In the past year there has been plenty of conspiracy, of course, but also
         a lot of things have "just happened." And while our leaders are out there
         warning us to be vigilant, the statisticians are out there warning that pat-
     terns are not always what they seem.  We need to be reminded, Paulos and
     others say, that most of the time patterns that seem stunning to us aren't
     even there.  For instance, although the numbers 9/11 (9 plus 1 plus 1)
     equal I 1, and American Airlines Flight 1 1 was the first to hit the twin
     towers, and there were 92 people on board (9 plus 2), and Sept. 1 1 is the
     254th day of the year (2 plus 5 plus 4), and there are 1 1 letters each in
     "Afghanistan ... .. New York City" and "the Pentagon" (and while we're
     counting, in George W. Bush), and the World Trade towers themselves
     took the form of the number 1 1, this seeming numerical message is not
     actually a pattern that exists but merely a pattern we have found. (After
     all, the second flight to hit the towers was United Airlines Flight 175,
     and the one that hit the Pentagon was American Airlines Flight 77, and
     the one that crashed in a Pennsylvania field was United Flight 93, and the
     Pentagon is shaped, well, like a pentagon.)
        The same goes for the way we think of miraculous intervention.  We
     need to be told that those lucky last-minute stops for an Egg McMuffin
     at McDonald's or to pick up a watch at the repair shop or to vote in the
     mayoral primary - stops that saved lives of people who would otherwise
     have been in the towers when the first plane hit - certainly looked like
     miracles but could have been predicted by statistics.  So, too, can the
     most breathtaking of happenings - like the sparrow that happened to
     appear at one memorial service just as a teenage boy, at the lecturn eulo-
     gizing his mom, said the word "mother." The tiny bird lighted on the
     boy's head; then he took it in his hand and set it free.
         Something like that has to be more than coincidence, we protest.  What
     are the odds?  The mathematician will answer that even in the most unbe-
     lievable situations, the odds are actually very good.  The law of large num-
     bers says that with a large enough denominator - in other words, in a
     big wide world - stuff will happen, even very weird stuff.  "The really
     unusual day would be one where nothing unusual happens," explains
     Persi Diaconis, a Stanford statistician who has spent his career collecting
     and studying examples of coincidence.  Given that there are 280 million
     people in the United States, he says, "280 times a day, a one-in-a-million
     shot is going to occur."
          Throw your best story at him - the one about running into your child-
     hood playmate on a street corner in Azerbaijan or marrying a woman who
     has a birthmark shaped like a shooting star that is a perfect match for your
     own or dreaming that your great-aunt Lucy would break her collarbone
     hours before she actually does - and he will nod politely and answer that
     such things happen all the time.  In fact, he and his colleagues also warn me
     that although I pulled all examples in the prior sentence from thin air, I will
     probably get letters from readers saying one of those things actually hap-
     pened to them.
            And what of the deaths of nearly a dozen scientists?  Is it really possi-
     ble that they all just happened to die, most in such peculiar, jarring ways,
     within so short a time?  "We can never say for a fact that something isn't a
      conspiracy," says Bradley Efron, a
          professor of statistics at Stanford.
          "We can just point out the odds
          that it isn't."

          I FIRST FOUND MYSELF wondering about coincidence last spring when
          I read a small news item out of the tiny Finnish town of Raahe, which
          is 370 miles north of Helsinki.  On the morning of March 5, two eld-
          erly twin brothers were riding their bicycles, as was their                 
          their separate errands.  At 9:30, one brother was struck
          coastal Highway 8 and killed instantly.  About two hours
          down the same highway, the other brother was struck by a second truck
          and killed.
             "It was hard to believe this could happen just by chance," says Marko
          Salo, the senior constable who investigated both deaths for the Raahe Po-
          lice Department.  Instead, the department looked for a cause, thinking ini-
          tially that the second death was really a suicide.
            "Almost all Raahe thought he did it knowing that his brother was
          dead," Salo says of the second brother's death.  "They thought he tried
          on purpose.  That would have explained things." But the investigation
          showed that the older brother was off cheerfully getting his hair cut just
          before his own death.
             The family could not immediately accept that this was random coinci-
          dence, either.  "It was their destiny," offers their nephew, who spoke with
          me on behalf of the family.  It is his opinion that his uncles shared a psy-
          chic bond throughout their lives.  When one brother became ill, the other
          one fell ill shortly thereafter.  When one reached to scratch his nose, the
          other would often do the same.  Several years ago, one brother was hit and
          injured by a car (also while biking), and the other one developed pain in
          the same leg.
            The men's sister had still another theory entirely.  "She worried that it
          was a plot to kill both of them," the nephew says, describing his aunt's
          concerns that terrorists might have made their way to Raahe.  "She was an-
          gry.  She wanted to blame someone.  So she said the chances of this hap-
          pening by accident are impossible."
            Not true, the statisticians say.  But before we can see the likelihood for
          what it is, we have to eliminate the distracting details.  We are far too taken,
          Efron says, with superfluous facts and findings that have no bearing on the
          statistics of coincidence.  After our initial surprise, Efron says that the real
          yardstick for measuring probability is "How surprised should we be?"
          How surprising is it, to use this example, that two 70-year-old men in the
          same town should die within two hours of each other?  Certainly not com-
          mon, but not unimaginable.  But the fact that they were brothers would
          seem to make the odds more astronomical.  This, however, is a superfluous
          fact.  What is significant in their case is that two older men were riding 1-
          cycles along a busy highway in a snowstorm, which greatly increases the
          probability that they would be hit by trucks.
            Statisticians like Efron emphasize that when something striking hap-
          pens, it only incidentally happens to us.  When the numbers are large
          enough, and the distracting details are removed, the chance of anything is
          fairly high.  Imagine a Meadow, he says, and then imagine placing your fin-
          ger on a blade of grass.  The chance of choosing exactly that blade of grass
          would be one in a million or even higher, but because it is a certainty that
          you will choose a blade of grass, the odds of one particular one being cho-
          sen are no more or less than the one to either side.
            Robert J. Tibshirani, a statistician at Stanford University who proved that
          it was probably not coincidence that accident rates increase when people si-
         multaneously drive and talk on a  cellphone, leading some states to
         ban the practice, uses the example of a hand of poker.  "The chance of get-
         ting a royal flush is very low," he says, "and if you were to get a royal
         flush, you would be surprised.  But the chance of any hand in poker is
         low.  You just don't notice when you get all the others; you notice when
         you get the royal flush."
            When these professors talk, they do so slowly, aware that what they are
   saying is deeply counterintuitive.  No sooner have they finished explaining
   that the world is huge and that any number of unlikely things are likely to
   happen than they shift gears and explain that the world is also quite small,
   which explains an entire other type of coincidence.  One relatively simple
   example of this is "the birthday problem." There are as many as 366 days
   in a year (accounting for leap years), and so you would have to assemble
   367 people in a room to absolutely guarantee that two of them have the
   same birthday.  But how many people would you need in that room to
   guarantee a 50 percent chance of at least one birthday match?
   Intuitively, you assume that the answer should be a relatively large
   number.  And in fact, most people's first guess is 183, half of 366.  But the
   actual answer is 23.  In Paulos's book, he explains the math this way:
   [T] he number of ways in which five dates can be chosen (allowing for
   repetitions) is (365 x 365 x 365 x 365 x 365).  Of all these 3655 ways, how-
   ever, only (365 x 364 x 363 x 362 x 361) are such that no two of the dates
   are the same; any of the 365 days can be chosen first, any of the remain-
   ing 364 can be chosen second and so on.  Thus, by dividing this latter
   product (365 x 364 x 363 x 362 x 361) by 3655, we get the probability that
   five persons chosen at random will have no birthday in common.  Now, if
   we subtract this probability from I (or from 100 percent if we're dealing
   with percentages), we get the complementary probability that at least
   two of the five people do have a birthday in common.  A similar calcula-
   tion using 23 rather than 5 yields 1/2, or 50 percent, as the probability that
   at least 2 of 23 people will have a common birthday."
   Got that?
       Using similar math, you can calculate that if you want even odds of find-
   ing two people born within one day of each other, you only need 14 peo-
   ple, and, if you are looking for birthdays a week apart, the magic number is
   seven. (Incidentally, if you are looking for an even chance that someone in
   the room will have your exact birthday, you will need 253 people.) And yet
   despite numbers like these, we are constantly surprised when we meet a
   stranger with whom we share a birth date or a hometown or a middle
   name.  We are amazed by the overlap - and we conveniently ignore the
   countless things we do not have in common.

          Which brings us to the death of Benito Que, who was not, despite
 reports to the contrary, actually a microbiologist.  He was a re-
 searcher in a lab at the University of Miami Sylvester Cancer
 Center, where he was testing various agents as potential cancer drugs.  He
 never worked with anthrax or any infectious disease, according to Dr. Bach
 Ardalan, a professor of medicine at the University of Miami and Que's boss
 for the past three years.  "There is no truth to the talk that Benito was doing
 anything related to microbiology," Ardalan says.  "He certainly wasn't do-
 ing any sensitive kind of work that anyone would want to hurt him for."
   But those facts got I-ost amid the confusion - and the prevalence of
 very distracting details - in the days after he died.  So did the fact that he
 had hypertension.  On the afternoon of Monday, Nov. 19, Que attended
 a late-afternoon lab meeting, and as it ended, he mentioned that he hadn't
  been feeling well. A nurse took
      Que's blood pressure, which was
      190/110. "I wanted to admit him"
      to the hospital, Ardalan says, but
      Que insisted on going home.

         Que had the habit of parking his
      car on Northwest 10th Avenue, a
      side street that Ardalan describes
      as being "beyond the area consid-
      ered to be safe." His spot that day
      was in front of a house where a
      young boy was playing outside.
      Four youths approached Que as he neared his car, the boy later told the
      police, and there might have been some baseball bats involved.  When the
      police arrived, they found Que unconscious.  His briefcase was if
      side, but his wallet was gone.  His car was eventually found abandoned
      several miles from the scene.  He was taken to the hospital, the same one
      at which he worked, where he spent more than a week in a coma before
      dying without ever regaining consciousness.
         The mystery, limited to small items in local Florida papers at first, was
      "What killed Benito Que?" Could it have been t e mugging?  A CAT
      scan showed no signs of bony fracture.  In fact, there were no scrapes or
      bruises or other physical signs of assault.  Perhaps he died of a stroke?
      His brain scan did show a "huge intracranial bleed," Ardalan says, which
      would have explained his earlier headache, and his high blood pressure
      would have made a stroke likely.
         In other words, this man just happened to be mugged when he was a
      stroke waiting to be triggered.  That is a jarring coincidence, to be sure.
      But it is not one that the world was likely to have noticed if Don Wiley
      had not up and disappeared.

              Don C. Wiley was a microbiologist.  He did some work with anthrax,
              and a lot of work with H.I.V, and he was also quite familiar with
      Eboia, smallpox, herpes and influenza.  At 57, he was the father of
      four children and a professor of biochemistry and biophysics in the de-
      partment of molecular and cellular biology at Harvard.
         On Nov. 15, four days before the attack on Benito Que, Wiley was in
      Memphis to visit his father and to attend the annual meeting of the scien-
      tific advisory board of St. Jude's Research Hospital, of which he was a
      member.  At midnight, he was seen leaving a banquet at the Peabody Hotel
      in downtown Memphis.  Friends and colleagues say he had a little to drink
      but did not appear impaired, and they remember him as being in a fine
      mood, looking forward to seeing his wife and children, who were about to
      join him for a short vacation.
         Wiley's father lives in a Memphis suburb, and that is where Wiley should
      have been headed after the banquet.  Instead, his car was found facing in
      the opposite direction on the Hernando DeSoto Bridge, which spans the
      Mississippi River at the border of Tennessee and Arkansas.  When the po-
      lice found the car at 4 a.m., it was unlocked, the keys were in the ignition
      and the gas tank was full.  There was a scrape of yellow paint on the driver's
       side  which appeared to come from a construction sign on the bridge, and a
       right hubcap was missing on the passenger side, where the wheel rims were
      also scraped.  There was no sign, however, of Don Wiley.
         The police trawled the muddy Mississippi, but they didn't really ex-
      pect to find him.  Currents run fast at that part of the river, and a body
      would be quickly swept away.  At the start of the search, they thought he
      might have committed suicide; others had jumped from the DeSoto
      Bridge over the years.  Detectives searched Wiley's financial records, his
      family relationships, his scientific research - anything for a hint that the
      man might have had cause to take his own life.


         Finding nothing, the investigation turned medical.  Wiley, they
  learned, had a seizure disorder that he had hidden from all but
  family and close friends. He had a history of two or three major epi-
  sodes a year, his wife told investigators, and the condition was
  made worse when he was under stress or the influence of alcohol.
  Had Wiley, who could well have been tired, disoriented by bridge
  construction and under the influence of a few drinks had a seizure   that
   sent him over the side of the bridge?
         That was the theory the police spoke of in public, but they were also
 considering something else.  The week that Wiley disappeared coincided
  with the peak of anthrax fear throughout the country.  Tainted letters ap-
  peared the month before at the Senate and the House of Representatives.
  Two weeks earlier, a New York City hospital worker died of inhaled an-
  thrax.  Memphis was not untouched by the scare; a federal judge and two
  area congressmen each received hoax letters.  Could it be mere chance
  that this particular scientist, who had profound knowledge of these mi-
  crobes, had disappeared at this time?
      "The circumstances were peculiar," says George Bolds, a spokesman
  for the Memphis bureau of the F.B.I., which was called in to assist.
  "There were questions that had to be asked.  Could he have been kid-
  napped because his scientific abilities would have made him capable of
  creating anthrax?  Or maybe he'd had some involvement in the mailing of
  the anthrax, and he'd disappeared to cover his tracks?  Did his co-con-
  spirators grab him and kill him?
      "We were in new territory," Bolds continued.  "Just because something is
  conceivable doesn't mean it's actually happened, but at the same time, just
  because it's never happened before doesn't mean it can't happen.  People's
  ideas of what is possible definitely changed on Sept. 11. People feel less se-
  cure and less safe.  I'm not sure that they're at greater risk than they were
  before.  Maybe they're just more aware of the risk they are actually at."
      As a species, we appear to be biologically programmed to see patterns and
  conspiracies, and this tendency increases when we sense that we're in danger.
  "We are hard-wired to overreact to coincidences", says Persi Diaconis.  "It
  goes back to primitive man.  You look in the bush, it looks like stripes, you'd
  better get out of there before you determine the odds that you're looking at
  a tiger.  The cost of being flattened by the tiger is high.  Right now, people are
  noticing any kind of odd behavior and being nervous about it."
      Adds John Allen Paulos: "Human beings are pattern-seeking animals.  It
  might just be part of our biology that conspires to make coincidences
  more meaningful than they really are.  Look at the natural world of rocks
  and plants and rivers: it doesn't offer much evidence for superfluous co-
  incidences, but primitive man had to be alert to all anomalies and respond
    to them as if they were real."
      For decades, all academic talk of coincidence has been in the context of
  the mathematical.  New work by scientists like Joshua B. Tenenbaum, an as-
  sistant professor in the department of brain and cognitive sciences at
  M.I.T, is bringing coincidence into the realm of human cognition.  Finding
  connections is not only the way we react to the extraordinary, Tenenbaum
  postulates, but also the way we make sense of our ordinary world.  "Coinci-
  dences are a window into how we learn about things," he says.  "They show
  us how minds derive richly textured knowledge from limited situations."
      To put it another way, our reaction to coincidence shows how our
  brains fill in the factual blanks.  In an optical illusion, he explains, our
  brain fills the gaps, and although people take it for granted that seeing is
   believing, optical illusions prove that's not true.  "Illusions also prove
    that our brain is capable of imposing structure on the world," he says.
    "One of the things our brain is designed to do is infer the causal struc-
    ture of the world from limited information."
       If not for this ability, he says, a child could not learn to speak.  A child
    sees a conspiracy, he says, in that others around him are obviously com-
    municating and it is up to the child to decode the method.  But these same
    mechanisms can misfire, he warns.  They were well suited to a time of cave-
    men and tigers and can be overloaded in our highly complex world.  "It's
    why we have the urge to work everything into one big grand scheme," he
    says. "We do like to weave things together.

     "But have we evolved into fundamentally rational or fundamentally it-
    rational creatures?  That is one of the central questions."

    WE PRIDE OURSELVES on being independent and original, and yet our reac-
    tions to nearly everything can be plotted along a predictable spectrum.
    When the grid is coincidences, one end of the scale is for those who believe
    that these are entertaining events with no meaning; at the other end are
    those who believe that coincidence is never an accident.
     The view of coincidence as fate has lately become something of a mini-
    trend in the New Age section of bookstores.  Among the more popular au-
    thors is SQuire Rushnell (who, in the interest of marketing, spells his first
    name with a capital Q).  Rushnell spent 20 years producing such television
    programs as "Good Morning America" and "Schoolhouse Rock." His fas-
    cination with coincidence began when he learned that both John Adams
    and Thomas Jefferson died on the same July 4, 50 years after the ratifica-
    tion of the Declaration of Independence.
      "That stuck in my craw," Rushnell says, "and I couldn't stop wondering
    what that means." And so Rushnell wrote "When God Winks: How the

    Power of Coincidence Guides Your Life." The book was published by a
    small press shortly before Sept. 11 and sold well without much publicity.  It
    will be rereleased with great fanfare by Simon on & Schuster next month.  Its
    message, Rushnell says, is that "coincidences are signposts along your uni-
    versal pathway.  They are hints that you are going in the right direction or
    that you should change course.  It's like your grandmother sitting across
    the Thanksgiving table from you and giving you a wink.  What does that
    wink mean?  'I'm here, I love you, stay the course."'

      During my interview with Rushnell, I told him the following story: On
    a frigid December night many years ago, a friend dragged me out of my
    warm apartment, where I planned to spend the evening in my bathrobe
    nursing a cold.  I had to come with her to the movies, she said, because she
    had made plans with a pal from her office, and he was bringing a friend for
    me to meet.  Translation: I was expected to show up for a last-minute blind
    date.  For some reason, I agreed to go, knocking back a decongestant as I
   left home.  We arrived at the theater to find that the friend who was sup-
    posed to be my "date" had canceled, but not to worry, another friend had
    been corralled as a replacement.  The replacement and I both fell asleep in
     the movie (I was sedated by cold medicine; he was a medical resident who
     had been awake for 36 hours), but four months later we were engaged, and
     we have been married for nearly 15 years.
         Rushnell was enthralled bv this tale, particularly by the mystical force
     that seemed to have nudges me out the door when I really wanted to
     stay home and watch "The Golden Girls." I know that those on the oth-
     er end of the spectrum - the scientists and mathematicians - would
     have offered several overlapping explanations of why it was
     unremarkable.
       There are, of course, the laws of big numbers and small numbers - the
     fact that the world is simultaneously so large that anything can happen and
     so small that weird things seem to happen all the time.  Add to that the
     work of the late Amos Tversky, a giant in the field of coindence theory,
     who once described his role in this world as "debugging human intuition.
     Among other things, Tversky disproved the "hot hand" theory of basket-
     ball, the belief that a player who has made his last few baskets will more
     likely than not make his next.  After examining thousands of shots by the
     Philadelphia 76ers, he proved that the odds of a successful shot cannot be
     predicted by the shots that came before.
        Tversky similarly proved that arthritis sufferers cannot actually predict
     the weather and are not in more pain when there's a storm brewing, a belief
     that began with the ancient Greeks.  He followed 18 patients for 15
     months, keeping detailed records of their reports of pain and joint swelling
     and matching them with constantly updated weather reports.  There was
     no pattern, he concluded, though he also conceded that his data would not
     change many people's beliefs.
         We believe in such things as hot hands and arthritic forecasting and pre-
     destined blind dates because we notice only the winning streaks, only the
     chance meetings that lead to romance, only the days that Grandma's hands
     ache before it rains. "We forget all the times that nothing happens," says
     Ruma Falk, a professor emeritus of psychology at the Hebrew University
     in Jerusalem, who studied years ago with Tversky. "Dreams are another
     example," Falk says. "We dream a lot. Every night and every morning. But
     it sometimes happens that the next day something reminds you of that
     dream. Then you think it was a premonition."
       Falk's work is focused on the question of why we are so entranced by
     coincidence in the first place. Her research itself began with a coincidence.
     She was on sabbatical in New York from her native Israel, and on the night
     before Rosh Hashana she happened to meet a friend from Jerusalem on a
     eManhattan street corner. She and the friend stood on that corner and mar-
     veled at the coincidence. What is the probability of this happening? she re-
     members wondering. What did this mean?
        "How stupid we were," Falk says now, "to be so surprised. We related
     to all the details that had converged to create that moment. But the real
     question was what was the probability that at some time in some place I would meet
     one of my circle of friends?  And when I told this story
    to others at work, they encoded the events as
    two Israelis meeting in New York, something
    that happens all the time."
      Why was her experience so resonant for her,
    Falk asked herself, but not for those around her?
    One of the many experiments she has conducted
    since then proceeded as follows: she visited sev-
    eral large university classes, with a  total of 200
    students, and asked each student to write his or
    her birth date on a card.  She then quietly sorted
    the cards and found the handful of birthdays that
    students had in common.  Falk wrote those dates
    on the blackboard.  April 10, for instance, Nov. 8,
    Dec. 16.  She then handed out a second card and
    asked all the students to use a scale to rate how
    surprised they were by these coincidences.
      The cards were numbered, so Falk could de-
    termine which answers came from respondents
    who found their own birth date written on the
    board.  Those in that subgroup were consistently
    more surprised by the coincidence than the rest
    of the students.  "It shows the stupid power of
    personal involvement," Falk says.
      The more personal the event, the more mean-
    ing we give it, which is why I am quite taken with
    my story of meeting my husband (because it is a
    pivotal moment in my life), and why SQuire
    Rusbnell is also taken with it (because it fits into
    the theme of his book), but also why Falk is not
    impressed at all.  She likes her own story of the
    chance meeting on a corner better than my story,
    while I think her story is a yawn.
      The fact that personal attachment adds signifi-
    cance to an event is the reason we tend to react
    so strongly to the coincidences surrounding
    Sept. 11. In a deep and lasting way, that tragedy
    feels as if it happened to us all.
      Falk's findings also shed light on the count-
    less times that pockets of the general public
    find themselves at odds with authorities and
    statisticians.  Her results might explain, for in-
    stance, why lupus patients are certain their
    breast implants are the reason for their illness,
    despite the fact that epidemiologists conclude
    there is no link, or why parents of autistic chil-
    dren are resolute in their belief that childhood
    immunizations or environmental toxins or a
    host of other suspected pathogens are the
    cause, even though experts are skeptical.  They
    might also explain the outrage of all the pa-
    tients who are certain they live in a cancer clus-
    ter, but who have been told otherwise by re-
    searchers.
      Let's be clear: this does not mean that con-
    spiracies do not sometimes exist or that the
    environment never causes clusters of death
     And just as statistics are often used to show us
     that we should not be surprised, they can also
     prove what we suspect, that something is
     wrong out there.
     "The fact that so many suspected cancer clus-
     ters have turned out to be statistically insupport-
     able does not mean the energy we spent looking
     for them has been wasted," says Dr. James M.
     Robins, a professor of epidemiology and biosta-
     tistics at Harvard and an expert on cancer clus-
     ters.  "You're never going to find the real ones if
     you don't look at all the ones that don't turn out
     to be real ones."
         Most Often, though, coincidence is a sort of
     Rorschach test.  We look into it and find what we
     already believe.  "It's like an archer shooting an
     arrow and then drawing a circle around it," Falk says
       "We give it meaning because it does mean
      something - to us."

     VLADIMIR PASECHNIK WAS 64 when he died.
     His early career was spent in the Soviet Union
     working at Blopreparat, the site of that country's
     biological weapons program.  He defected in
     1989 and spilled what he knew to the British, re-
     vealing for the first time the immense scale of
     Soviet work with anthrax, plague, tularemia and
     smallpox.
        For the next 10 years, he worked at the Cen-
     ter for Applied Microbiology and Research, part
     of Britain's Department of Health.  Two years
     ago, he left to form Regma Biotechnologies,
     whose goal was to develop treatment for tuber-
     culosis and other infectious disease.  In the
     weeks before he died, Pasechnik had reportedly
     consulted with authorities about the growing
     anthrax scare.  Despite all these intriguing de-
     tails, there is nothing to suggest that his death
     was caused by anything other than a stroke.
     Robert Schwartz's death, while far more dra-
     matic and bizarre, also appears to have nothin
     to do with the fact that he was an expert on
     DNA sequencing and analysis.  On Dec. 10 he
     was found dead on the kitchen floor of his isolat
     ed log-and-fieldstone farmhouse near Leesburg
     Va., where he had lived alone since losing his wife
     to cancer four years ago and his children to col-
     lege.  Schwartz had been stabbed to death with
     two-foot-long sword, and his killer had carve
     an X on the back of his neck.
        Three friends of Schwartz's college-age
     daughter were soon arrested for what the pros-
     ecutor called a "planned assassination"; two of
     the trials for first-degree murder are schedule
     for this month.  A few weeks later, police arrest-
     ed the daughter as well.  One suspect has a histo-
     ry of mental illness, and their written statements
     to police talk of devil worship and revenge
     There is no talk, however, of microbiology.
       On the same day that Schwartz died. Set Van
  Nguyen, 44, was found dead in an air-locked
  storage chamber at the Australian Common-
  wealth's Scientific and Industrial Research Or-
  ganization's animal diseases facility in Geelong.
  A months-long internal investigation concluded
  that a string of equipment failures had allowed
  nitrogen to build up in the room, causing Nguy-
  en to suffocate.  Although the center itself dealt
  with microbes like mousepox, which is similar to
  smallpox, Nguyen himself did not.  "Nguyen
  was in no way involved in research into mouse-
  pox," says Stephen Prowse, who was the acting
  director of the Australian lab during the investi-
  gation.  "He was a valued member of the lab-
  oratory's technical support staff and not a re-
  search scientist."
   Word of all these deaths (though not the spe-
  ific details) found its way to Ian Gurney, a Brit-
    ish writer.  Gurney is the author of "The Cassan-
  dra Prophecy: Armageddon Approaches," a
  book that uses clues from the Bible to calculate
  that judgment Day will occur in or about the
  year 2023.  He is currently researching his second
  book, which is in part about the threat of nuclear
  and biological weapons, and after Sept. 11 he
  entered a news alert request into Yahoo, asking
  to be notified whenever there was news with the
  key word "microbiologist."
   First Que, then Wiley, then Pasechnik,
  Schwartz and Nguyen popped up on Gurney's
  computer.  "I'm not a conspiracy theorist," says
  the man who has predicted the end of the
  world, "but it certainly did look suspicious."
  Gurney compiled what he had learned from
  these scattered accounts into an article that
  he sent to a number of Web sites, including
  Rense.com, which tracks U.F.O. sightings
  worldwide.  "Over the past few weeks," Gurney
  wrote, "several world-acclaimed scientific re-
  searchers specializing in infectious diseases and
  biological agents such as anthrax, as well as
  DNA sequencing, have been found dead or
  have gone missing."
    The article went on to call Benito Que, the
  cancer lab technician, "a cell biologist working
  on infectious diseases like H.I.V," and said that
  he had been attacked by four men with a base-
  ball bat but did not mention that he suffered
  from high blood pressure.  It then described the
  disappearance of Wiley without mentioning his
  seizure disorder and the death of Pasechnik
  without saying that he had suffered a stroke.  It
  gave the grisly details of Schwartz's murder, but
  said nothing of the arrests of his daughter's
  friends.  Nguyen, in turn, was described as "a
  skilled microbiologist," and it was noted that he
  shared a last name with Kathy Nguyen, the 61-
  year-old hospital worker who just happened to
  be the one New Yorker to die of anthrax.
    Of course, there have always been rumors
  based on skewed historical fact.  Recall, for ex-
  ample, the list of coincidences that supposedly
  linked the deaths of Presidents Lincoln and
  Kennedy.  It goes, in part, like this: The two men
  were elected 1 00 years apart; their assassins were
  born 100 years apart
      (in fact, 101 years apart); they were both succeed-
    ed by men named Johnson; and the two Johnsons
    were born 100 years apart.  Their names each con-
    tain seven letters; their successors' names each
    contain 13 letters; and their assassins' names each
    contain 15 letters.  Lincoln was shot in a theater
    and his assassin ran to a warehouse, while Ken-
    nedy was shot from a warehouse and his assassin
    ran to a theater.  Lincoln, or so the story goes, had
    a secretary named Kennedy who warned him not
    to go to the theater the night he was killed (for
    the record, Lincoln's White House secretaries
    were named John Nicolay and John Hay, and Lin-
    coln regularly re)'ected warnings not to attend
    public events out of fear for his safety, including
    his own inauguration); Kennedy, in turn, had a
    secretary named Lincoln (true, Evelyn Lincoln)
    who warned him not to go to Dallas (he, too, was
    regularly warned not to go places, including San
    Antonio the day before his trip to Dallas).
     I first read about these connections five years af-
    ter the Kennedy assassination, when I was 8,
    which says something about how conspiracy the-
    ory speaks to the child in all of us.  But it also says
    something about the technology of the time.  The
    numerological coincidences from the World Trade
    Center that I mentioned at the start of this article
    made their way onto my computer screen by Sept.
    15, from a friend of a friend of a friend of an ac-
    quaintance, ad infinitum and ad nauseam.
       Professor Robins of Harvard points out that
    "the Web has changed the scale of these things."
    Had there been a string of dead scientists back in
    1992 rather than 2002, he says, it is possible that
    no one would have ever known.  "Back then, you
    would not have had the technical ability to gather
    all these bits and pieces of information, while to-
    day you'd be able to pull it off.  It's well known that
    if you take a lot of random noise, you can find
    chance patterns in it, and the Net makes it easier to
    collect random noise."
    The Gurney article traveled from one Web site
    to the next and caught the attention of Paul Sie-
    veking, a co-editor of Fortean Times, a magazine
    that describes itself as "the journal of Strange Phe-
    nomena.
        "People send me stuff all the time," Sleveking
    "This was really interesting." Wearing his
     second hat as a columnist for the The Sunday
    Telegraph in London, he wrote a column on the
    subject for that paper titled "Strange but True -
    The Deadly Curse of the Bloresearchers." His
    version began with the link between the two
    Nguyens and concluded, "It is possible that
    nothing connects this string of events, but ... it
    offers ample fodder for the conspiracy theorist or
    thriller writer."
        Commenting on the story months later, Slevek-
    says "It's probably just a random clumping,
    but it just happens to look significant.  We're all na-
    rural storytellers, and conspiracy theorists are Just
    frustrated novelists.  We like to make up a good
    story out of random facts."
       Over the months, Gurney added names to his
  list and continued to send it to virtual and actual
  publications around the U.S. Mainstream news-
  papers started taking up the story, including an
  alternative weekly in Memphis, where interest in
  the Wiley case was particularly strong, and most
  recently The Toronto Globe and Mail.  The tally
  of "microbiologists" is now at I 1, give or take,
  depending on the story you read.  In addition to
  the men already discussed, the names that appear
  most often are these: Victor Korshunov, a Rus-
  Sian expert in intestinal bacteria, who was bashed
  over the head near his home in Moscow; Ian
  Langford, a British expert in environmental risk
  and disease, who was found dead in his home
  near Norwich, England, naked from the waist
  down and wedged under a chair; Tanya
  Holzmayer, who worked as a microbiologist
  near San Jose and was shot seven times by a for-
  mer colleague when she opened the door to a
  pizza delivery man; David Wynn-Williams, who
  studied microbes in the Antarctic and was hit by
  a car while jogging near his home in Cambridge,
  England; and Steven Mostow, an expert in influ-
  enza, who died when the plane he was piloting
  crashed near Denver.
     The stories have also made their way into the
 e-mal in-boxes of countless microbiologists.

   Janet Shoemaker, director of pub-
  lic and scientific affairs for the
  American Society for Microbiolo-
  gy, heard the tales and points out
  that her organization alone has
  41,000 members, meaning that the
  deaths of 11 worldwide, most of
  whom were not technically micro-
  biologists at all, is not statistically
  surprising.  "We're saddened by
  anyone's death," she says.  "But
  this is Just a coincidence.  In an-
  other political climate I don't
  think anyone would have noticed."
    Ken Alibek heard them, too, and
  dismissed them.  Alibek is one of
  the country's best-known micro-
  biologists.  He was the No. 2 man at
  Blopreparrat (where Victor Pasech-
  nik also worked) before he defected
  and now works with the U.S. gov-
  ernment seeking antidotes for the
  very weapons he developed.  Those
  who have died, he says, did not real-
  ly know anything about biological
  weapons, and if there were a con-
  spiracy to kill scientists with such
  knowledge, he would be dead.  "I
  considered all this a little artificial,
  because a number of them couldn't
  have been considered B.W ex-
  perts, " he says with a hint of dis-
  dain.  "I got an e-mall from Pasech-
  nik before he died, and he was
  working on a field completely dif-
  ferent from this.  People say to me,
  'Ken, you could be a target,' but if
  you start thinking about this, then
  your life is over.  I'm not saying I'm
  not worried, but I'm not paying
  much attention.  I'm opening my
  mail as usual.  If I see something
  suspicious, I know what to do."
    Others are not quite as sanguine.
  Phyllis Della-Latta is the director
  of clinical microbiology services at
  New York's Columbia Presbyteri-
  an Medical Center.  She found an
  article on the deaths circulating in
  the most erudite place - an In-
  ternet discussion group of direc-
  tors of clinical microbiology labs
  around the world.  These are the
  people who, when a patient de-
  velops suspicious symptoms, are
  brought in to rule out things like
  anthrax.
    Della-Latta, whom I know from
  past medical reporting, forwarded
  the article to me with a note: "See
  attached.  FYI.  Should I be con-
  cerned???  I'm off on a business
  trip to Italy tomorrow & next
  week.  If I don't return, write my
  obituary."
    She now says she doesn't really
  believe there is any connection be-
  tween the deaths.  "It's probably
  only coincidence," she says, then
  adds: "But if we traced back a lot of
  things that we once dismissed as co-
  incidence - foreigners taking fly-
  ing lessons - we would have found
  they weren't coincidence at all.  You
  become paranoid.  You have to be."

    DON WILEY'S BODY was finally
    found on Dec. 20, near Vidalia, La.,
    about 300 miles south of where he
    disappeared.
      The Memphis medical examiner,
    0. C. Smith, concluded that yellow
    paint marks on Wiley's car suggest
    that he hit a construction sign on
    the Hernando DeSoto Bridge, as
    does the fact that a hubcap was
    missing from the right front tire.
    Smith's theory is that heavy truck
    traffic on the bridge can set off
    wind gusts and create "roadway
    bounce," which might have been
    enough to cause Wiley to lose his
    balance after getting out of the car
    to inspect the scrapes.  He was 6-
    foot-3, and the bridge railing
    would have only come up to mid-
    thigh.
       If Dr. Wiley were on the curb
    trying to assess damage to his car,
    all of these factors may have played
    a role in his going over the rail,"
    Smith said when he issued his re-
    port.  Bone fractures found on the
    body support this theory.  Wiley
    suffered fractures to his neck and
    spine, and his chest was crushed, in-
    juries that are consistent with Wi-
    ley's hitting a support beam before
    he landed in the water.
      The Wiley family considers this
    case closed.  "These kinds of the-
    ories are something that's always
    there," says Wiley's wife, Katrin
    Valgeirsdottir, who has heard all the
    rumors.  "People who want to be-
    lieve it will believe it, and there's
    nothing anyone can say."
      The Memphis Police also con-
    sider the case closed, and the local
    office of the F.B.I. has turned its at-
    tention to other odd happenings.
    The talk of Memphis at the mo-
    ment is the bizarre ambush of the
    city's coroner last month.  He was
    wrapped in barbed wire and left ly-
    ing in a stairwell of the medical ex-
    aminer s building with a live bomb
    strapped to his chest.
      Coincidentally, that coroner,
    0. C. Smith, was also the coroner
    who did the much-awaited, some-
    what controversial autopsy on
    Don Wiley.
      What are the odds of that?