Originally posted by Light
Why are some people so good in sports and some not?
They naturally have better hand-eye coordination, and/or they maintain a physically fit and active body, and/or they practice, and/or they eat their Wheaties.

Why are some people good in singing and/or playing instruments and some not?[/b]
Their bodies are built with more able vocal cords, diaphraghms, etc., and listening to a lot of music helps.

Why are some people so smart and some not?[/b]
In a word, genetics.