How does a good idea work? What's the difference between a good idea, and an idea "that kills"? Why do some great ideas fall out of use? How can you guarantee that your idea has every chance to succeed? Why are some Facebook groups larger in population than the country of Finland? Why do we type on inferior keyboards? What did Saint Paul do to "market" Christianity? Nicolas Bordas, CEO of TBWA\FRANCE, has for years studied the way ideas work: h