> arrest our own evolutionary development. There is a sense in which there's not much point in aliens "uplifting" humanity: on our own, without external interf

> arrest our own evolutionary development. There is a sense in which there's not much point in aliens "uplifting" humanity: on our own, without external interference, we might develop in ways that would be hard for them to predict. And over the long term, the novelties of our self-guided evolution might prove useful to them. For example, imagine if we had the tech to put a human brain in a cat (ethical questions aside). We'd probably then think it wouldn't be much good unless the hybrid had opposable thumbs, too. And then we'd think it'd be better if it walked on two legs. And so on, and so forth, until we have extra-hairy human beings with cat ears, which really wouldn't add much to our society (well, opinions might be mixed on that).