No, I’m talking abour really smart.
Suppose that we brought Neanderthals back to life, and the reason they went extinct wasn’t because they were dumber. Suppose they were more intelligent than modern humans, and just happened to have a run of bad luck that wiped them out before they could develop technology.
Suppose that Neanderthals turned out to be genetically intelligent enough that when brought back and put into a modern world with modern education they absorbed everything we could give them, made straight A’s and advanced into our universities by age 14. Suppose they had eidetic memories and could typically grasp physics, chemistry and so forth pretty easily.
Imagine a world in which modern humans are outclassed by a different variety of human being.
Bigger issue: will the neanderthal be classified as human? How about a genetic construct with 10% chump DNA? 20%? 90%?