Many people (and Richard too[1]) have wondered if he is somewhat on the autistic spectrum. An "innocuous" partial disability would cause poor social interactions, and would lead to difficultly learning social nuances.
Of course he could also just be socially inept (i.e. no excuse for failing to learn good behaviour) and he clearly isn't disabled (anyone actually dealing with autism is doing life in hard mode).
https://www.computerworld.com/article/2551458/asperger-s-oxy...
