A novice was trying to fix a broken Lisp machine by turning the power off and on.
[Tom] 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.
[Tom] 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.
— AI Koan

Shut up and reboot.
The Doctor: I reinitialized the entire command structure retaining all programmed abilities, but deleting the supplementary preference architecture.
Bill: [to everybody else] He turned it off and on again.
Bill: [to everybody else] He turned it off and on again.
— Doctor Who, "Smile"