This is a story about love. About inscrutable complexity and remarkable simplicity, about the promise of forever. It is about obsession and devotion, grand gestures and 4,000-word love letters.
It is about a curious group of people with an almost religious zeal for a mind-numbing string of numbers. Actually one number, made up of a chain that is known -- so far -- to be more than 1 trillion digits long.
They are the acolytes of the church of pi.
And once a year many of them gather to talk about pi, rhapsodize about it, eat pi-themed foods (actual pie, but so much more), have pi recitation contests and feel a little less sheepish about their unusual passion.
That day fell last Wednesday this year -- March 14. Or 3.14. Obviously.
The question is why.
And if you ask the fans of pi why, a startling number of them will say: "Why climb Mount Everest? Because it's there."
But then they start talking about some very simple ideas. Like the beauty of a number that seems to go on forever and yet has no discernible pattern to it. Or about the valor of the memorization gymnastics, challenging oneself always to know more.
MENTAL GYMNASTICS
This is how Akira Haraguchi, a 60-year-old mental health counselor in Japan, puts it: "What I am aiming at is not just memorizing figures. I am thrilled by seeking a story in pi."
He said this one day last fall after accurately reciting pi to 100,000 decimal places. It took him 16 hours. He does not hold the Guinness world record, only because he has not submitted the required documentation to Guinness. But he has his story.
The world record for reciting pi belongs to Chao Lu, a Chinese chemistry student, who rattled off 67,890 digits over 24 hours in 2005. It took 26 video tapes to submit his effort to Guinness.
A brief math refresher: Pi is the relationship between a circle's circumference and diameter. Multiply the diameter by pi -- 3.14159, to use a crude approximation that would make many of the people in this story blanch -- and you get the circumference.
Supercomputers have computed pi to more than a trillion decimal places, looking always for a pattern to unlock its mystery. And for centuries the number has fascinated mathematicians.
And then there are people like Marc Umile. Twelve years ago, while working as an usher at a Philadelphia opera house, he picked up a book on curiosities of math and read about pi's seemingly infinite, random string.
He wondered about applying the way we absorb music to the mystical number. An obsession was born. In 2004 Umile read the digits of pi into a tape recorder. He did it a thousand at a time and gave it a rhythm -- some numbers high-toned, some low.
He listened to the tape constantly. This went on for two years.
"To and from work, in my quiet time, on my lunch break -- and when I didn't have the tape I would recite in the shower," he says. "Probably 40 percent of the time there was an earphone in my ear. I said, `Oh my God, what have I created?'"
What he created was what is believed to be US record for pi memorization -- 12,887 digits. He typed them into a spreadsheet at a Philadelphia law office -- three-and-a-half hours, 1,000 numbers at a time, with two smoke breaks.
Umile, who is 40 and now works as a Medicare biller, believes the fascination with pi has something to do with our desire to learn the ultimate truth of something. Each decimal place, in theory, takes you 10 times closer to the answer.
He says he made a mistake in his training -- he told too many people what he was up to.
His wife and his family were rooting for him. Most of the rest dismissed him as a weirdo.
"I have a delicate confidence level in a way," he says. "Maybe I don't believe in myself too much. If you do something of this magnitude, keep it a secret. Don't tell anybody what you're doing."
Others are less shy about their fixation.
A `PIEM'
A software engineer in Virginia named Mike Keith wrote a poem to pi, a "piem." A love letter, in a way. To say that it is a something to behold is an understatement -- it is nearly 4,000 words long -- and the length in letters of each word corresponds to pi's digits.
In other words, if you can remember the poem -- which riffs on T.S. Eliot's The Love Song of J. Alfred Prufrock, Act V of Hamlet and Edgar Allan Poe's The Raven, among other texts -- you too can recite pi.
"One: A Poem: A Raven," it begins (3-1-4-1-5). "Midnights so dreary, tired and weary, silently pondering volumes extolling all by-now obsolete lore. During my rather long nap -- the weirdest tap! An ominous vibrating sound disturbing my chamber's antedoor."
And so on.
Keith says he thinks of himself only as "an average pi nut," and figures he knows maybe 100 pi digits off the top of his head.
"My daughter knows about 50," he adds. "She's 15."
There are logical gathering places for people like this, and one of them is the Massachusetts Institute of Technology, where, on March 14, students have been known to wish each other -- out loud -- a happy Pi Day.
The school plays a role in encouraging this -- in the past it has tried to mail its acceptance letters on March 14, although that didn't work out this year.
MIT CONNECTION
And last year, when an MIT official wrote on an admissions blog that it probably wouldn't work out then either, he was greeted with disappointment: "Pi Day seems so romantic," one prospective student wrote.
There's a popular chant, an MIT rallying cry, that includes "3.14159," which rhymes with "Cosine, secant, tangent, sine!"
And Bryan Owens, an MIT senior, says the ability to recite pi is a sort of bragging right, a coin of the realm.
"It's like how much money you have," he says.
"But you never win. You always find somebody who knows it to more digits than you do. I think the basic idea is we like to celebrate things, kind of celebrate who we are," he says
And that is why, like the Irish on St. Patrick's Day or Italians on Columbus Day, on 3-14, in many cases at 1:59pm, pi enthusiasts have their moment in the sun.
At the Exploratorium in San Francisco, there were pies to eat, people wearing pi jewelry, more beads -- color-coded by digit -- added to the pi string. And the celebrants will gather at a sort of pi shrine, a brass plaque engraved with pi's first 100 digits.
It may be a stretch to say that pi has achieved a kind of cultural cachet, but it is true that, as an obsession, it's not just for math geeks anymore. Givenchy makes a Pi perfume. Kate Bush sings out its digits in a song. And -- of course -- YouTube stocks videos of people reading pi for the camera.
Umile was scheduled to appear on a local TV show last Wednesday. A few nights before he rattled off 10,000 pi digits, just to keep the gears oiled.
Funny thing, though -- for the life of him, he can't remember the telephone number he calls every month to make his mortgage payment. And the other day he got his own bank account number wrong.
"It starts with 6-1-4," he says. "And I wrote 3-1-4."
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