Not total control. We could engineer away things that might eventually in some future crisis prove to be a deciding factor in our survival. We could easily en

Not total control. We could engineer away things that might eventually in some future crisis prove to be a deciding factor in our survival. We could easily engineer away genes that might have gone on to outlive us as humans, and then end up outcompeted by them. Or we could engineer ourselves into different variants, and compete with each other. In the end you can’t second guess evolution.