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.
The Jargon File in general is such a treasure
I like the koans page
seeing that jargon file has an extensive page on retrocomputing feels like figuring out that there were archeologists in ancient egypt