Many TEDTalks speakers have answered the 2008 Edge Foundation question: What have you changed your mind about? Why?
Among the more than 160 essays from leading thinkers — scientists, philosophers, artists — look for Wired’s Chris Anderson, Nick Bostrom, Stewart Brand, Richard Dawkins, Aubrey de Grey, Juan Enriquez, Helen Fisher, Neil Gershenfeld, Daniel Gilbert, Daniel Goleman, Kevin Kelly, Steven Pinker, Carolyn Porco, Martin Rees, Michael Shermer and Craig Venter. Block out some time to sample these — it’s an addictive read.