The uncanny valley is “the uncanny valley is the hypothesis that human replicas that appear almost but not exactly like real human beings elicit feelings of eeriness and revulsion among some observers.” https://en.wikipedia.org/wiki/Uncanny_valley So if one thing isn’t quite right it spoils the whole picture when it comes to how we judge human appearance.
Watching the clip below from Ben Goertzel made me wonder if there might be an uncanny valley for intelligence. If there is one thing a human can’t do he or she is considered stupid. If he or she excels at one thing we call him or her an “idiot savant.” Perhaps this could be a reason that the current progress in AI is underestimated. If so, it will continue to be right up until machines exceed our abilities in everything.