George Bernard Shaw is quoted as saying, that "some men see things as they are and ask why, others dreams things that never were and ask why not."  This is often quoted in a political context, but could also be said to be a central question of creativity.  Where does creativity come from, how can it be stimulated, and like the uncertainty principle, if we try too hard to understand it, do we in some way alter it?  Jonah Lehrer, the author of "How we Decide" gives us a contemporary and real look at the creative process in his new book Imagine: How Creativity Works. My conversation with Jonah Lehrer: