Why are some people extremely talented and understand at a glance, while others are always brain-dead?

I was born useful, and "waste" is a treasure in the wrong place. The so-called high talent, but he played a certain aspect. Talent refers to a person's innate expertise or characteristics in some aspects. No brain refers to a person's intelligence level. Refers to people's ability to know and understand objective things and solve problems with knowledge and experience. Therefore, "talent" and "intelligence" are two concepts. For example, Zhou Zhou, a conductor with mental retardation, is very talented in conducting music, but can you say that he has enough brains? The five factors that make up intelligence are observation, attention, memory, thinking and imagination. Influencing factors of intelligence: heredity and nutrition, early experience, education and teaching, social practice and subjective efforts.