sounds like you been reading gladwell books lol
Finding "gifted" children does not contradict this. Nobody pops out of the womb a math genius.
Yes, technically no one pops out knowing trig or calculus, but some are born with the cognitive capacity, which later manifests in life, to readily master abstract and complicated stuff, and others aren't born with that ability so they struggle to understand concepts that smart people grasp easily. Although ability can be lopsided (some are better at math than verbal), the less intelligent tend to have no dominant strengths - they are just average. And that's fine. Most people are that way.
Gifted children are "gifted" with a laser focus on the unusual things that they find fun - math, music, what-have-you. They spend countless hours playing with numbers or with music, while little Johnny is playing with a ball.
Why don't adults play with paste, coloring books, and alphabet letters? Because they are too mentally mature for those activities. Likewise, high-IQ children have a higher mental age, hence they find these tasks tedious and boring, as adults do.
Anyway, point is, when people point to "gifted" talent, this is just another cop-out. They don't have an explanation. They are appealing to everybody's shared sense of magical outcomes.
But it boils down to the hours that kids put into their interests.
Well, there's something called an IQ score, and it does a pretty good job at predicting all sorts of things, such as socioeconomic outcomes, job performance, educational attainment, welfare dependency, and learning ability. The IQ test is one of great achievements of human psychology, is much harder to manipulate than EQ tests, and scores tend to remain stable throughout life.