[11a.m.]Why are some people smarter than others?

In the world some people are really smart.

I think these people were born that way.
Why I think that? We can see examples in their childhood.
When we accepted first education, we need a lot of time.
However, they were able to accept easily.
Especiall, if the field of education is same the develpoed brain area, we can find genius!
In many TV programs, many smart child came out! They have something special.
They always do study what they like field of study!

I think there are many smart people in the world.
However, why we can't find them? We get the answer in cotinuous education.
Forexample, One boy is born as genius. But He could not recieve continuous education.
After 10years later... How? He'll become normal person or fool.
In that case, He can't develop his brain.
So I think the normal people that do the best for using their brain very useful became smart(not genius!)

Sum of my writing.
First, Smart people are born that way.
Second, If smart people don't use their brain, they will be a normal person.
Third, Normal People can become smart people when they use their brain useful.