Bill Gates, chairman and founder of Microsoft Corp., listens during the Clinton Global Initiative (CGI) meeting on September 24, 2013 in New York City. - 

This final note today, in which Bill Gates finally comes clean about something his company has forced millions of people to do countless times a day.

He did a talk last week at Harvard in which he was asked this question: "Why, when I want to turn on my software and computer, do I need to have three fingers -- CTRL-ALT-DEL? Where is that from? Whose idea was that?"

Gates got technical for a minute, something about accessing the base level of the software, and then he 'fessed up.

"We could have had a single button, but the guy who did the IBM keyboard design didn't wanna give us our single button. It was a mistake."

Follow Kai Ryssdal at @kairyssdal