I worked with a guy that has Aspergers which is somewhere on the autism spectrum. He has a computer science degree and primarily writes code and does Unix administration. I could walk by the guy in the in the hallway and he would totally ignore me even if I said hello. If I knocked on his door and asked him a question, he seemed completely normal.
I guess most of us know people like that.
Heck, sometimes I have been that way myself. Quietly shutting the world out for a spell.
“Jai guru deva om
Nothing’s gonna change my world”