Why? You wouldn't let it design _and build_ reactor and turn it on immediately. You'd first test that it works. And if it works better than any reactor that hum

Why? You wouldn't let it design _and build_ reactor and turn it on immediately. You'd first test that it works. And if it works better than any reactor that humans designed, why would you strip the world of that possibility? It doesn't even have to be a whole reactor. It could be a better design of one part of it.