That's specious reasoning: something being learnt doesn't mean that people can't have an adaptation that aids, or inhibits, that particular learning.
Running isn't innate, we learn to do it. Most children do it. But some people lack the apparatus, some are just habituated against it, some are impaired in other ways. And, running is a defining characteristic of humans. (It's not a perfect analogy but I think it fits)
Prosopagnosia appears to be different from other
neurological memory problems because it doesn’t cause
any other issues with memory and isn’t always caused by
brain damage — as in my case, it can be developmental
and genetic.
