[perl4ever]

You can't teach any arbitrary thing (nor temperament) to any arbitrary person. For a specific example, consider: https://en.wikipedia.org/wiki/Teichm%C3%BCller_space

I can say that not only would I never get anywhere with math at that level, but some of the related mathematical pages on Wikipedia surpass my ability to even tell if they are real or the work of cranks.

For any random person, there are things they can't do or learn because of the way they're made, any more than a cow can do calculus.

What's deceptive is that people constantly tell you that you must believe in yourself. But the reason isn't that believing in yourself is sufficient for success - the reason is believing in yourself is necessary to succeed so everyone who is successful attributes their success to that.

[chrishacken]

Given enough time and training, anyone who puts their all into learning it, is capable of understanding that.

It may take them 20 years to learn math from the ground up, but they can do it. Saying someone can't do something is bullshit. That's sheep mentality.

[emodendroket]

Many people do put their lives into things without ever becoming world-class talents.

[chrishacken]

Understanding an algorithm or concept is not a world-class talent.

[yequalsx]

There are lots of concepts whose understanding is a world class talent. In mathematics one would be hard pressed to find 10 people who have read and really understand Hironaka's Resolution of Singularities. There are many, many concepts whose understanding is a world class talent.