Cicada hibernation cycles are prime numbers, but I don’t buy the general theory that a 13 or 17 year disappearance is any more of a predator confusion/avoidance strategy than 12, 14, or 16 years.

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Unless! Unless cicada had a random distribution of hibernation cycles and over time some of them became synchronized because the 2s and 4s and 6s all emerged at the same time with the 12s…whereas the ones on a prime number rotation …hmm I have to talk to a math person about this

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