i say the fax machine... amazing to me how a piece of paper in my office can be printed on a machine in another office anywhere in the world...
Electricity.
Another one of those that are borderline DISCOVERY or INVENTION.
I think it has to favor invention since he set out looking for it.
Out of the serious answers I suppose electricity beats music which I posted.....
when fax machines first came out - I remember a woman in an office I was in getting confused. She was faxing a sealed envelope and expecting the recipient to be able to read the enclosed contents of the letter. yes... a SEALED envelope being faxed. LOL
This is one of the funniest things I have read, my granpa told me a story of when the electric system was first installed here in CR
He said that some guy told him that it was incredible that the oil (you know, like oil lamps) could go through those tiny wires and get into the lightbulbs) :lolBIG: