Conjecture: All Odd Numbers Are Prime. Mathematician's Proof

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Conjecture: All odd numbers are prime.

Mathematician's Proof:
3 is prime. 5 is prime. 7 is prime. By induction, all
odd numbers are prime.
Physicist's Proof:
3 is prime. 5 is prime. 7 is prime. 9 is experimental
error. 11 is prime. 13 is prime ...
Engineer's Proof:
3 is prime. 5 is prime. 7 is prime. 9 is prime.
11 is prime. 13 is prime ...
Computer Scientists's Proof:
3 is prime. 3 is prime. 3 is prime. 3 is prime...

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