Just as I was laying down in bed, I had an interesting thought.
Imagine a future world (centuries or millenia from now) where the majority of people are what we currently classify as having Asperger syndrome. Based on what I see, I think this is a very possible outcome.
In this hypothetical reality, a person who is considered normal today would seem like a psychic, because they would be a lot better at reading emotions than everyone else.
Now think about rewinding the clock a similar amount of time in the other direction.
Could it be possible that what we currently imagine as “normal” today was viewed as a complete abnormality in that time, and that maybe people with what we consider paranormal ability was once the baseline?
The evolution of the races in Tolkien’s literary world seems to fit this idea.