At about 21:10 in this video, [ame="http://www.youtube.com/watch?v=omvMvkOzBIE"]History.Ch.How.the.Earth.Was.Made.The.Deepest.Place.on.Earth. - YouTube[/ame] they explain how a Navy submarine detection system read the ocean floor as bands of alternating North and South magnetic stripes. The whole video is well worth watching but the idea that someone read that magnetic map and made the connection that it's a record of the earth's shifting magnetic poles frozen in cooled magma is pretty mind boggling to me. I love stuff like this, that I can sit on my butt and find out all kinds of interesting stuff because of the genius of people who can make connections where I'd have no clue what I'm looking at. Is there a story of a scientific "ah ha!" moment, or any example of brilliant deduction that blows your mind?