Conversation so far:
What was an anecdote about Hopper?
Grace Hopper is famous for her nanoseconds visual aid.
What did she use for her nanoseconds visual aid?
She started handing out pieces of wire that were just under one foot long (11.80 inches = 300 millimeters)--the distance that light travels in one nanosecond.
Did she use any other visual aids?
she passed out packets of pepper, calling the individual grains of ground pepper picoseconds.
What was this trying to show?
Later she used the same pieces of wire to illustrate why computers had to be small to be fast.
Why do computers have to be small to be fast?
nanoseconds was actually the maximum speed the signals would travel in a vacuum.
What was another anecdote about her?
While neither Hopper nor her crew mentioned the phrase "debugging" in their logs, the case was held as an instance of literal "debugging..

Question: When did she literally debug something?
Self-contained rewrite: When did Grace Hopper literally debug something?