You know a craftsman by his work. Programmers, real programmers, are always fiddling, and love to show off. Imagine if you were hiring a mad scientist, and he came to the interview with zero crazy schemes for world domination and had never grafted a deadly weapon to a deadlier life form. Would you take her seriously? Would you hire an astronomer who never looked through a telescope beyond school hours? No. Would you hire a ballplayer who just majored in the sport, and had never played a single game?
There are doers and couch warmers. Doers know doers. Couch warmers know couches,