" The brains's limits in mental arithmetic or memorization are obvious" Those limits are pretty high up, though, given the incredible performances of math sava

" The brains's limits in mental arithmetic or memorization are obvious" Those limits are pretty high up, though, given the incredible performances of math savants: https://en.wikipedia.org/wiki/Hypercalculia https://en.wikipedia.org/wiki/Hypercalculia Safe to say that most of us are nowhere near those limits.