That's easy, emacs is the choice of hermits all over the world ;)

if he replies, he is a vim user.

He uses emacs because he likes the benefit of slime when he's programming with Clojure. But he's not opposed to using vim once a vim Clojure environment becomes more mature.

Probably cats to a file.

Probably uses a magnetized needle and a steady hand.

Nah. He definitely uses butterflies.

That would explain all the tornados...