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And if you really want to relate to the youth of today you can discuss the origin of the expressions "going on line" and "posting to a message board":
13. WHY DO WE SAY "ON LINE" FOR COMPUTER THINGS?
In the early days of computing, when one machine needed to communicate with another, they had to be attached with a physical cord or "line." Processes that could be completed without this communication were "off line."
10. WHY DO WE CALL IT A MESSAGE "BOARD"?
Before the internet, when people wanted to make an announcement or share information they would put it on a piece of paper and attach it to a board mounted in a public location where many people would see it.
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