What scientific idea is ready for retirement? [5] Read responses to that inquiry from the likes of Jared Diamond, Richard Dawkins, Alison Gopnik, Max Tegmark, Freeman Dyson, June Gruber, and many other brilliant people over at Edge.org [6], legendary book agent John Brockman's hub for really smart scientists and other big thinkers to share ideas with each other and the public. From the intro:

Science advances by discovering new things and developing new ideas. Few truly new ideas are developed without abandoning old ones first. As theoretical physicist Max Planck (1858-1947) noted, "A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it." In other words, science advances by a series of funerals. Why wait that long?