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Dear Nickelodeon, I've gotten over how Sponge Bob's
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pants are not actually square, I can ignore most of the time
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that Gary's shell is not a logarithmic spiral, but what I
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cannot forgive is that Sponge Bob's pineapple house
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is a mathematical impossibility!
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There's three easy ways to find spirals on a pineapple.
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There's the ones that wind up it going right, the ones
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that spiral up to the left, and the ones that
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go almost straight up. Keyword: almost.
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If you count the number of spiral going left, and the number
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of spirals going right, they'll be adjacent Fibonacci numbers.
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Three and five, or five and eight, eight and thirteen,
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or thirteen and twenty-one.
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You claim that that Sponge Bob square pants lives in
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a pineapple under the sea, but does he really?
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A true pineapple would have Fibonacci spirals, so
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let's take a look. Because these images of his house
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don't let us pick it up and turn it around and count
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the number of spirals going around it, it might be hard
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to figure out whether it's mathematically a pineapple or not
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but there's a huge clue in the third spiral, the one going upwards
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In this pineapple, there's eight to the right,
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thirteen to the left, you can add those numbers together
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to get how many numbers are in the set spiraling steeply upwards.
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In this case, twenty-one.
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The three sets of spirals in any pineapple are pretty much
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always adjacent Fibonacci numbers. The rare mutant
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cases might show Lucas numbers or something,
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but it will always be three adjacent numbers in a series
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What you'll never have is the same number of spirals
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both ways. Pineapples, unlike people, don't have bilateral
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symmetry. You'll never have the third spiral be not
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a spiral but just a straight line going up a pineapple.
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Yet, when we look at Sponge Bob's supposed pineapple
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under the sea, it clearly has lines of pineapple things going
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straight up. It clearly has bilateral symmetry.
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It clearly is not actually a pineapple at all because no
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pineapple could possibly grow that way.
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Nickelodeon, you need to take a long, hard look in the mirror
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and think about the way you're misrepresenting the
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universe to your viewers. This kind of mathematical
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oversight is simply irresponsible.
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Sincerely, Vi Hart.