There are basically 3 requirements for intelligence that surpass the basic need to survive:
DNA, Diet, and Stimulus.
DNA limits what structures can develop which is the basic foundation of intelligence.
Diet provides the raw materials to crate the structures that DNA is trying to build. Poor diet causes DNA to sacrifice specific objectives to insure survival. Specific toxins like lead also limit the body's ability to create structures. At the same time short term diet inhibits performance.
Experience refines specific structural elements. Without early experience in specific areas it becomes harder to develop efficient systems for dealing with those situations. It's not impossible to learn French at 50 if you only know Spanish, but it's far easer to learn it at 5 than 50. Part of this has to due with the brain ignoring sounds that it finds unimportant.
All of the above statements are well supported by a huge body of research being annoyed by them is like getting pissed off at gravity while building rockets.
DNA, Diet, and Stimulus.
DNA limits what structures can develop which is the basic foundation of intelligence.
Diet provides the raw materials to crate the structures that DNA is trying to build. Poor diet causes DNA to sacrifice specific objectives to insure survival. Specific toxins like lead also limit the body's ability to create structures. At the same time short term diet inhibits performance.
Experience refines specific structural elements. Without early experience in specific areas it becomes harder to develop efficient systems for dealing with those situations. It's not impossible to learn French at 50 if you only know Spanish, but it's far easer to learn it at 5 than 50. Part of this has to due with the brain ignoring sounds that it finds unimportant.
All of the above statements are well supported by a huge body of research being annoyed by them is like getting pissed off at gravity while building rockets.