For anyone who hasn't seen it yet, the AI koan on power cycling:
'A novice was trying to fix a broken Lisp machine by turning the power off and on.
Knight, seeing what the student was doing, spoke sternly: “You cannot fix a machine by just power-cycling it with no understanding of what is going wrong.”
Knight turned the machine off and on.
The machine worked.'
See the rest at http://www.catb.org/jargon/html/koans.html