your nervous system. We impose meaning on those physical events that take on that meaning. I mean the physical events take on those meanings by virtue of the fact that we, as a culture, agree that that's the case. I think that in my view, this is partly why memes occur, because ideas are contagious in a sense because we often as part of our ... one of our superpowers as a species is the ability to create meaning. The ability to create something real where there used to be nothing real, only by virtue of collective agreement.