I firmly believe that the human brain is incapable of basic mathematics. When I add two numbers, say 145 and 394, I have memorized a few rules and tricks that

I firmly believe that the human brain is incapable of basic mathematics. When I add two numbers, say 145 and 394, I have memorized a few rules and tricks that let me break that down to something like 1+4 (hundreds), 4+9 (tens), add one to the hundreds, etc. Or, I might figure out that this can be decomposed to 150+400 - (5+6) or something similar. At any rate, I decompose the problem to sub-problems I have memorized the answer to: adding single-digit numbers. This is basically the same process as programming. Are we asking whether people are "incapable" of mathematics? No. But we know that some people are way better at language than math. And that is all there is to it.