A doctor, a civil engineer and a programmer are discussing whose profession is the oldest.
"Surely medicine is the oldest profession," says the doctor. "God took a rib from Adam and created Eve and if this isn't medicine I'll be… The civil engineer breaks in and says, "But before that He created the heavens and the earth from chaos. Now that's civil engineering to me." The programmer thinks a bit and then says, "And who do you think created chaos?"