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