People have no idea what they want or need, or even what they like. Observe the following empirical evidence as presented by respected marketer Malcolm Gladwell

People have no idea what they want or need, or even what they like. Observe the following empirical evidence as presented by respected marketer Malcolm Gladwell: http://www.youtube.com/watch?v=iIiAAhUeR6Y http://www.youtube.com/watch?v=iIiAAhUeR6Y Also, that bit about a heart valve is a sly reference to a famous polymath-type who invented a revolutionary kind of heart valve as just one part of a long and incredibly varied career. Can anyone remember who this is? Google is giving me nothing.