. >> rose: and from harvard the theoretical fizz assist lisa randell. >> what is really wonderful about fizz i six and i think? is important it is symptomatic the regime where we understand things and where we need to go beyond it so we have there core of knowledge that works and it can coul could turn out that whu have shorter distances and higher energies you get to do mains you haven't explored that you find out that fundamentally the rules are very different but we still have this base of knowledge that works, that makes predictions, i think that we have never reached a point where we have all of the answers. >> rose: we conclude with jonah lehrer who writes about creativity. >> we assume creativity is a singular way, there is one way we should be thinking when we need a new idea. it is a overall catching idea you need a momen moment of insid sometimes you need the focus and grind it outside grind it out and go draft after draft. >> sometimes it helps the wall and be horribly stumped because what your brain is telling you need a moment of insight now, you need a big break, you need