When ideas have sex

This video gives me the kind of thrill that almost nothing else can do. It does this by means of the ideas contained within it, and that of course is what the speaker, Matt Ridley, is describing in his talk: The power of ideas as expressed by the collective brain. And so my steadfast and absolute position that evolution is the single most essential thing for people to understand if they are to make any sense of where we are today as humans, and where we are headed (as post-humans, no doubt) is once again reaffirmed.