
I went to my first computer conference at the New York Hilton about 20
years ago.  When somebody there predicted the market for microprocessors
would eventually be in the millions, someone else said, "Where are they
all going to go? It's not like you need a computer in every doorknob!"

Years later, I went back to the same hotel.  I noticed the room keys had
been replaced by electronic cards you slide into slots in the doors.

There was a computer in every doorknob.
	-- Danny Hillis
