Tuesday morning chuckle

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:???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????