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Memorial Set For 'Pi Day' Creator (sfgate.com)

"Three-point-one-four was more than a number to museum curator Larry Shaw," writes the San Francisco Chronicle. Long-time Slashdot reader linuxwrangler writes: In 1988 at a retreat for San Francisco Exploratorium staff, Larry Shaw proposed linking the digits of pi, which begins 3.14, with the date March 14. Initially the "holiday" was only celebrated by museum staff but it didn't take long for the idea to spread and Pi Day was born.

For 38 years, Mr. Shaw donned a red cap emblazoned with the magic digits and led a parade of museum goers, each of them holding a sign bearing one of the digits of pi. Shaw died August 19 at age 78 and a memorial is planned for Sunday September 24.

The memorial will be held in Mill Valley, California, the Chronicle reports, adding that "pie will be served."

28 of 56 comments (clear)

  1. great idea but... by geoskd · · Score: 1, Informative

    Pi day was a nifty idea, and I enjoy celebrating it with my kids, but I find it symbolic in many ways of the problem with our modern society that we are celebrating the wrong day. Most mathematicians worth their salt will tell you that the important constant isnt pi, but tau.

    I find it amusing that or society chooses to remember pi instead of tau demonstrating their overall flawed understanding of the correlations between math and geometry. The two are intricately linked

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    1. Re:great idea but... by Anonymous Coward · · Score: 2, Informative

      There's also the fact that "3.14" equals nothing as a date, because most of the planet does not use the MM-DD-YYYY format.

    2. Re:great idea but... by Anonymous Coward · · Score: 2, Interesting

      DD-MM-YYYY or YYYY-MM-DD make sense. MM-DD might make sense as a shortened version of YYYY-MM-DD. For filing documents I use YYYY-MM-DD as sorting lexically makes more sense.

    3. Re:great idea but... by Anonymous Coward · · Score: 3, Funny

      That's why I'm waiting until May 9th of the year 3141 before celebrating.

    4. Re:great idea but... by hord · · Score: 1

      There's also the fact that pi can change values based on the underlying metric with which you use to measure space. If you use the taxi cab metric (shortest straight lines), pi becomes 4. This, of course, applies to tau as well.

    5. Re:great idea but... by MangoCats · · Score: 1

      Makes sense that 3, the more significant figure, correlates to month instead of day.

      I thought there should also be a special moment of celebration:

      Month 3

      Day 14

      Hour 15

      Minute 92 - toughie, do we go for 92.6539% of the hour at 3:55:35.54 ?

      so, what do we do at that moment? Something that relates the radius squared to the area of a circle would be appropriate. As the tau punks point out, circumference to diameter is kind of clunky.

    6. Re:great idea but... by Hognoxious · · Score: 1

      You're treating base 28 to 31, 24 and several cases of 60 as if they're decimals.

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    7. Re:great idea but... by camperdave · · Score: 1

      3.1410509?

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    8. Re:great idea but... by camperdave · · Score: 1

      Mathematicians should care. A circle is defined by its radius, not its diameter, so circumference/radius makes sense. Using the diameter requires extra definitions.

      --
      When our name is on the back of your car, we're behind you all the way!
  2. Even those that believe in Tau are sad by burhop · · Score: 1

    As someone who believes in Tau (see the Tau Manifesto here: https://tauday.com/tau-manifes... ), I still want to thank Larry Shaw. I've eaten many good American pies because of him.

    Tau day has never quite gotten the commercial backing that Pi day has. I blame Hallmark https://www.hallmarkecards.com... . Damn Pagans!

    1. Re:Even those that believe in Tau are sad by Anonymous Coward · · Score: 1

      You could almost say that celebrating pi day is... irrational.

    2. Re: Even those that believe in Tau are sad by da · · Score: 1

      Although, I never noticed before, but pi + e = pie! So pie = 5.85987...

      --
      I reserve the right to be wrong.
  3. Pi Day Creator Day? by michaelmalak · · Score: 3, Funny

    Next step is to memorialize whoever thought of creating Pi Day Creator Day

  4. Tau Day by Anonymous Coward · · Score: 1, Informative

    Perhaps now we can start teaching students about Tau (2Pi) and replacing Pi in our math texts.

  5. Help, I'm trapped in a Universe Factory... by burhop · · Score: 4, Funny

    Obligatory slashdot xkcd post. I'm sure Larry had it on his wall.

    https://xkcd.com/10/

  6. Americans got it wrong, as usual. by Harold+Halloway · · Score: 1

    Should have been 22/7.

  7. More Accurate Pi Day by Roger+W+Moore · · Score: 4, Insightful

    Don't worry, for all us un-americans there is a more accurate Pi day on 22/7 since 22/7 is a slightly better approximation to pi than 3.14.

    1. Re:More Accurate Pi Day by Hognoxious · · Score: 1

      If from Alabama, you insensitive clod! We can't have pi day since there's no zeroeth of March, amen!

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    2. Re:More Accurate Pi Day by sootman · · Score: 1

      > 22/7 is a slightly better approximation to pi than 3.14.

      VERY slightly.

      22 / 7 = approx. 3.14285714285714
      3.14285714285714 - 3.14159265358979 = 0.00126...
      3.14159265358979 - 3.14 = 0.00159...

      The difference in the differences is about 0.000328 in favor of 22 / 7.

      In other words, either will do for casual work. Even NASA only uses Pi out to 15 decimal places. https://www.jpl.nasa.gov/edu/n...

      By cutting pi off at the 15th decimal point... our calculated circumference of the 25 billion mile diameter circle would be wrong by 1.5 inches.

      Which means I could work at NASA because one of my classrooms had a big PI banner in the front of the room and I memorized PI to 17 places from looking at it all year. :D

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    3. Re:More Accurate Pi Day by camperdave · · Score: 1

      According to some date functions the 0th of the month is the last day of the previous month. Useful in some financial contexts.

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    4. Re:More Accurate Pi Day by janeil · · Score: 1

      Quick shout out for 355/113, the closest rational number to pi with a denominator less than 30,000. (Or something like that. Anyway, it's ridiculously close.)

  8. September 24th? by flargleblarg · · Score: 1

    Pi squared is ~9.87, so shouldn't the date be September 87th?

  9. Farewell to an inspiering man by hyades1 · · Score: 1

    I did not know Larry Shaw personally, and yet I am saddened by his passing. Is this irrational?

    --
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  10. Re:It's this specific to the U.S.? by Anonymous Coward · · Score: 2, Insightful

    YYYY-MM-DD is the only thing that makes any sense to me. Sorting alphanumerically also means sorting chronologically, and by time of day if you include the THH:MM:SSZ part.

  11. Deprecate MM-DD-YYYY by bib1620 · · Score: 1

    The US and all the others should just ditch MM-DD-YYYY. Such a fucked up way representing a date.

  12. It is half the circle constant - 6.28 by FeelGood314 · · Score: 1

    The true circle constant that we should be using is circumference/radius. It would make so many things easier. Defining a circle by diameter doesn't even make sense as there are lots of shapes that can have the same diameter where as a radius uniquely defines a circle.

    Learn something new and then tell your friends that Pi is the wrong circle constant. https://tauday.com/tau-manifes...

    Still it is cool when anyone does something to promote math.

  13. Re:It's this specific to the U.S.? by Anonymous Coward · · Score: 1

    Or you could wait for the 3rd day if the 14th month. I’ll provide the pie for everyone who cares to show up.

    I’m sure you’re the hit of your Fouth of May party, too, young padowan.

    Sheesh, can’t you allow a little unpedantic joy in the world without getting all International Sustem of Units on everyone (oddly abbreviated SI and not IS, so you can tail about how that and UTC are both a huge mistake because it’s all about you).

    I celebrate 14th March (by any spelling) by baking an Apple pie or a Key Lime pie in my Pi Plate (it’s a thing), whether it makes any sense or not, and now you can’t have any.

  14. Re:It's this specific to the U.S.? by PPH · · Score: 1

    You could celebrate Pi day around the rest of the world on the 22nd of July.

    --
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