Conversation so far:
What can you tell me about Grace Hopper's anecdotes?
Grace Hopper is famous for her nanoseconds visual aid.
How so?
She started handing out pieces of wire that were just under one foot long (11.80 inches = 300 millimeters)-.
Why did she do this?
(11.80 inches = 300 millimeters)--the distance that light travels in one nanosecond.

Question: What was she trying to convey to people?
Self-contained rewrite: What was Grace Hopper trying to convey to people with the wire?