An architect watched a mechanic remove engine parts from his car to
get to the valves. A surgeon, waiting for his car to be repaired, walked
over to observe the process. After they introduced themselves, they
began talking, and the talk turned to their lines of work.
"You know, doctor," said the architect, "I sometimes believe this
type of work is as complicated as the work we do."
"Perhaps," the surgeon replied. "But let's see him do it while the
engine is running."