I heard a version that went Mathematician: “3 is prime, 5 is prime, 7 is prime, therefore by induction we know all odd numbers are prime.” Physicist: “3 is pr

I heard a version that went Mathematician: “3 is prime, 5 is prime, 7 is prime, therefore by induction we know all odd numbers are prime.” Physicist: “3 is prime, 5 is prime, 7 is prime, 9 must be experimental error.” Computer scientist: “3 is prime, 5 is prime, 7 is prime, 9 is prime …”