It's the start of the new year, and that means it's time for the Edge's annual Big Question — and as always, it's a provocative one. Nearly 170 prominent thinkers were asked: "What scientific idea is ready for retirement? " Here's what they said.
"Science advances by a series of funerals," writes Edge.org  editor John Brockman. "Ideas change, and the times we live in change. Perhaps the biggest change today is the rate of change. What established scientific idea is ready to be moved aside so that science can advance?"