What scientific concept should be better known?

Each year, the prestigious journal online Edge.org ( @edge ) requests to dozens of contributors, mostly famous artists, thinkers and scientists, to answer any question. . . . 

This January, the question was: "What scientific term or concept should be better known? " On the menu, 206 answers covering both physics and biology or the social sciences. There is no question of mentioning all of them, but many contributions revolve around psychology and the cognitive sciences, exploring in particular the notion of bias.