I understand what you're saying about humans gaining the ability to control our own evolution, and I think you're right that we could, but I'm not sure that will happen anytime soon, although I could definately be wrong-it's just the impression that I've gotten. Mapping the human genome was a big achievement, but-and correct me if I'm wrong on this-as far as understanding just how genes work to make us who we are, I think we've got one foot in the door, so to speak, since there are so many factors involved and the processes are so complex-genes interact with each other in different ways, and are affected by things like maternal imprinting and, in females, the inactivation of parts of one of the x chromosomes, for instance. We're also affected by our early childhood environment. Of course, scientific knowledge does double every 10-20 years now. But I hope it can't any time soon, because while I'm optimistic about the goodness of humankind, I really don't think we're at the point right now where we can decide what qualities we should design ourselves to have. I think that all of us have cultural biases when it comes to things like that, some of which we probably aren't even aware of, and plus it's so complex. For instance, one might say we should design ourselves to be super intelligent, but without certain other qualities, or with certain other qualities, intelligence can be a dangerous thing, as can a number of other qualities.
I find really interesting what theoretical physicist Machio Kaku proposed about civilization, that it goes through a number of stages. According to this theory, we're in stage 0-very young as a civilization. To get to stage 1, we need to cross the uranium barrier (which basically means we must get to the stage where there is no longer the threat of someone misusing nuclear weapons) and avoid ecological collapse. To do this, we'd need to act globally rather than as hostile nation-states, to avoid misuse of nuclear weapons and to harness our resources at a global level. So if this is the case, then however we evolve, it must be in a way that allows us to cooperate globally, and I think we're already on our way to that. I'm willing to bet we're evolved enough already to allow this to happen. 