>>4889377First let me open with a joke:
A mathematician, physicist, and engineer are trying to classify non-generous prime numbers.
Mathematician: Let's see... 3 is prime, 5 is prime, 7 is prime, but 9 isn't prime, so all odd number's can't be prime.
Physicist: Hmm... 3 is prime, 5 is prime, 7 is prime, 9 isn't, 11 is prime, 13 is prime. Well 9 must be an experimental error, so all odds must be prime.
Engineer: That's easy! 3 is prime, 5 is prime, 7 is prime, 9 is prime...
