PROOF THAT ALL ODD NUMBERS ARE PRIME:
Mathematician -- 3 is prime, 5 is prime, 7 is prime, the rest follows by induction.
Statistician -- 3 is prime, 5 is prime, 7 is prime, 9 is experimental error so throw it out, 11 is prime, 13 is prime, the rest follows by induction.
Computer Scientist -- 3 is prime, 5 is prime, 7 is prime, 9 is prime, ....