Quoted from the interview:Grace Hopper on Letterman
(https://www.youtube.com/watch?v=1-vcErOPofQ&feature=youtu.be&t=267)

the host: Now Grace i understand that this is a visual ....

Grace: that is the maximum distance that light or electricity can travel in a billionth of a second.

The host: no faster no farther damn

Grace: when an admiral asks you why it takes a damn long to send a message by a satellite, you point out to him the between here and satellite there are a very large number of nanosticks.

注：
Quoted from another video about Grace Hooper:
(https://youtu.be/-_i5SaOAnHw

SHE IS ALSO FAMOUS FOR THE NANOSECONDS VISUAL AID: THE LENGTH OF WIRE THAT IS AS LONG AS LIGHT CAN TRAVEL IN ONE NANOSECOND.

SHE THOUGHT THAT THE MOST IMPORTANT THING SHE HAS ACCOMPLISHED , OTHER THAN BUILDING THE COMPUTER, WAS TRAINING YOUNG PEOPLE.

HER WORDS: THE MOST DANGEROUS PHRASE IS "WE'VE ALWAYS DONE IT THIS WAY". IF IT IS A GOOD IDEA, GO AHEAD AND DO IT! YOU CAN ALWAYS APOLOGIZE LATER.