I think you once said you could think in 11 dimensions or something. How do you manage to visualise four dimensions? Like can you visualise tesseracts?I can skip copious amounts of algebra for algebraic functions, but I am significantly slower for mixed (ir)rational, transcendental and trigonometric functions. However, I can usually still integrate by inspection if you give me a moment's notice, that or I will determine that it is not a nice looking form.