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Tuesday, May 8th, 2018

    Time Event
    5:52p
    All of the analysts were eating in spirals, and the algebraists in rows
    это очень смешно

    Back when I was in grad school there was a department lunch with corn
    on the cob. Partway through the meal one of the analysts looked around
    the room and remarked, "That's odd, all of the analysts are eating
    corn one way and the algebraists are eating corn another!" Everyone
    looked around. In fact everyone was eating the corn in one of two
    ways. One way was to munch over the length of the corn in a straight
    line, back up, turn slightly, and do another row across. Kind of like
    how an old typewriter goes. The other way was to go around in a
    spiral. All of the analysts were eating in spirals, and the
    algebraists in rows.

    There were a number of mathematicians present whose fields of study
    didn't make it clear whether they were on the analysis or algebra side
    of things. We went around and asked, and in every case the way they
    ate corn matched their preference. Since then I've made a point of
    amusing myself by asking mathematicians I meet whether they prefer
    algebra or analysis, and then predicting which way they will eat
    corn. I'm probably up to 40 or so by now, and in every case but one
    I've been able to correctly predict how they eat corn. The one
    exception was a logician who claimed to be exactly on the fence
    between the two. When I explained the corn thing to him he looked
    surprised, and said that he had an unusual way of eating corn. He went
    in loose spirals! In other words he truly was a perfect combination of
    algebra and analysis!

    If you have even a passing familiarity of probability, it is clear
    that despite how unbelievable it initially is that the type of
    mathematics you prefer is connected to how you eat corn, it is pretty
    much certain that there actually is a very strong connection. If you
    believe, as I do, that this difference is connected to how we think
    about other things, then there must be some odd connection between how
    we like to understand the world and how we eat corn. Why is another
    matter.

    How do I explain the distinction between algebra and analysis? Well
    the best way to understand it is to ask you to study advanced
    mathematics. You will have to take many courses with the word
    "algebra" in the name, and others with "analysis" in the name. By the
    time you're done you'll have experienced the difference, and you'll be
    clear on which you prefer. Odds are you won't do that, but that is the
    most reliable way to come to understand it.

    If I have to wave my hands and explain it, I would explain it like
    this. In algebra there are sequences of operations which have proven
    to be important and effective in one circumstance. Algebraists try to
    reuse these operations in different contexts in the hopes that what
    proved effective in one situation will be effective again. By contrast
    an analyst is likely to form an idiosyncratic mental model of specific
    problems. Based on that mental model you have intuitions that let you
    carry out long chains of calculations that are, in principle,
    obviously going to lead to the right thing. Typically your intuition
    is correct to within a constant factor, and you're only interested in
    some sort of limiting behavior so that is fine.


    дьяволы, ангелы.. кукуруза!

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