When you get to really advanced math, does it become more and more difficult and require higher and higher intelligence the farther you go down the road of learning more and more math, or does it stay just as easy and just build on itself?
Laying the first brick of a house is no easier than laying the last, as long as you wait until last to lay the last. But if you try to lay the last first, it's impossible because it would have to be suspended up in the air.
Is going really advanced with math (or physics or chemistry for that matter) the same? Pretty consistent difficulty just building?