Square Nine

Some numbers are interesting. 2 is the only even prime. 6 is the first perfect number. Considering the natural numbers, it should be possible to divide them into to sets: interesting and uninteresting numbers. Let us assume, efmk, that there are uninteresting numbers. Among that set there must be a minimum: by so being, it is obviously an interesting number. This contradicts the assumption that it is in the set of uninteresting numbers, in turn contradicting the assumption that there are uninteresting numbers. So every number must somehow be interesting.