The danger in convincing someone you're right...

...is that you may be wrong.

Ken Thompson (sitting)-&-Dennis Ritchie at PDP-11 courtesy of Peter Hamer

Ken Thompson (sitting)-&-Dennis Ritchie at PDP-11 courtesy of Peter Hamer

“I think there is a world market for maybe five computers.”, Thomas Watson, chairman of IBM, 1943

“This ‘telephone’ has too many shortcomings to be seriously considered as a means of communication. The device is inherently of no value to us.”, Western Union internal memo, 1876

“Who the hell wants to hear actors talk?”, H. M. Warner, Warner Brothers, 1927

“We don’t like their sound, and guitar music is on the way out.”, Decca Recording Co. rejecting the Beatles, 1962

“Stocks have reached what looks like a permanently high plateau.”, Irving Fisher, Professor of Economics, Yale University, 1929