[fideloper]

I think people need to understand that everyone processes things a bit differently due to genetics (brain) + environment (education style, etc).

I'm slow at this type of thing as well, and the complaint about this was one I agreed with even tho I've never hit it before. I know people who could solve this at a glance because they're "smarter" (their brain is more optimized for this type of solution) and/or they've developed heuristics for it at some point in their life.