Edge magazine has posted the Edge World Question for 2007. This year's question marks the tenth year in which Edge publisher and editor, John Brockman, has sent the yearly question to prominent thinkers, scientists, dot-commers, and writers around this. This year, 158 individuals sent in their answers, including Craig Venter, Xeni Jardin, Leonard Susskind, and Simon Baron-Cohen (the second cousin of Sacha Baron-Cohen). Think about your answer before reading the contributors' answers. Feel free to post your answer in the comments.