The human brain is extremely fascinating in the way it functions.I'm high masking autistic, and can get 'lucky' at blackjack if I pay attention.
I've been tresspassed from a few places because of it.
I knew a guy that would go to the Indian Reservation casino on the east side of Phoenix and get a weekly 'paycheck'. He screwed it up when he got real greedy one weekend!
I've been able to do it at times, but I never pursued it to develop it more.
I had a roommate in nuke power school that was dyslexic and had a photographic mind. When he took notes, when it was allowed, I could read his notes perfectly if I held them up to a mirror. He had to teach himself how to in mirror image for the millions of tests that we took.
I'm a pretty good poker player, but I rely a lot on visual cues. If I'm at a casino I will sit and watch a table for quite a while before I try to get in.