This is an utterly fascinating discussion of human evolution, past, present, and future. In this case, the future is pretty much here and Juan Enriquez asks some important questions about what it means to be human and what that might mean in that immediate future. As the father of an autistic son, I find the notion that, for better or worse, we may be seeing the effects of a rapid state of human evolution. I use the words "for better or worse" because evolution doesn't necessarily mean a net positive change; only time, and continued evolution, will decide. Nevertheless, it's something we need to pay attention to now.