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Three students were asked to evaluation the hypothesis "All odd numbers > 1 are prime."

The math major replied "3 is prime. 5 is prime. 7 is prime. 9 is ... NOT prime. The hypothesis is false."

The chemistry major replied "3 is prime. 5 is prime. 7 is prime. 9 is ... NOT prime. 11 is prime. 13 is prime ... The hypothesis is looking good, within experimental error."

The engineering major replied "3 is prime. 5 is prime. 7 is prime. 9 is prime. 11 is prime ..."

That's one way to cope when you're overmatched by rigor. ;)




You just described Bioinformatics! sigh We got all 3.

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The version I saw of this joke also had a version for the biology major:

3 is prime, 4 is prime, 5 is prime... :)

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Didn't get the "engineering major" part. Why he thought that 9 is prime?

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I didn't get it either, but my guess: The engineering student took a literal view. You told him to evaluate the statement; you gave him a rule. If you say all odd numbers greater than 1 are prime, then so be it.

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I think it might just be implying that engineering students aren't very good at mathematics.

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Because he doesn't understand what "evaluate the hypothesis" means.

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