Is it really all that obvious?

Question

JavaScript

Attention! The question is very strange, but I want to know the answer. In general, this is the situation: I have been studying webdev for about 6 months, sometimes I check the Toaster for interesting questions, and, for example, I look at something in JS, I understand the code, and how it works, at first I think that it would be easy to do it myself , but then I remember about the illusion of transparency , maybe it all seems to me. So I'm wondering how people come to this all? Somewhere they saw something similar, or they sat and sat, and suddenly such a decision dawned on them.
Example: code from this question . Either I look at everything very narrowly, or it is really something supernatural. It's just not obvious to me, I could not immediately offer this solution. Is it a question of experience or narrowness of my views?

Answer 1

The brain is like a muscle, if it is constantly exercised, it develops. Only the muscles become stronger, and the brain is better at solving problems of the type that it often encounters.