/sci/ - Science & Math

>>12464354
>>12464299
This is an obvious troll reacting to the posts explaining why the real numbers are not a logically sound theory and why it doesn't work.
OP tries to make the false equivalence between real numbers and rational numbers, he tries to present the argument of people who doubt the real numbers as saying that they don't exist because they're abstract quantities, which is nothing like the actual arguments. The rational numbers are fundamentally distinct from the real numbers, and not just because one is countable and other is not (which is actually a meaningless concept to begin with). The rational numbers can be implemented in the real world, and you can do arithmetic with them. The questions about rational numbers are definite questions. The reals are a fairy tale.
By the way, the people who have complaints about the real numbers are not actually trolling. You can go to the threads yourself and see them rationally explain their position with actual arguments.

People often like to repeat the meme that in maths, you understand, not memorize. That if you actually understood what was going on, there's no need to remember anything.
How true do you find this to be in higher maths?
I often forget the proofs of theorems. Yet I was pretty sure I understood them when I read them.