Interesting. At work atm so could only skim it
I did a college paper on Savant Syndrome, what Rain man (Kim Peek is his real name I believe) had. It has many different forms, artistic/spatial, mathematical, etc. Rain man could speed read one eye scanning each book’s page, and commit every word to memory, and recall anything that was written on any page
Usually it’s the brain compensating for some sort of organic damage or medical trauma, and in the past with people like Rain Man they had severe neurological problems that made communicating how their brain is working impossible to do
But one guy had savant syndrome and could communicate, so they did a documentary about his brain, lemme see if I can find it. The way he describes how he does these incredible complex math computations was really interesting, just numbers in his mind flashing by with the correct ones like lit up or something. For him, it was not conscious analytical computation like we would expect, but more like subconscious, like the computations we do when riding a bike
https://m.youtube.com/watch?v=