Why are some people smarter than others?

 Does it matter if you are right-handed/left-brained or left-handed/right-brained? I think it is not matter. People are usually right-handed and we have left-handed friends. According to theory, left-handed person is more creative, artistic and musical than right-handed person. However, someone who usually uses left hand is more logical. He loves math and he takes the first place of math exam. It is familar situation, isn't it? Likewise, right-handed person is more logical and punctual. But, a certain right-handed person has artistic talent and can become famous artist. So, It isn't matter that right-handed or left-handed person.

 Also, someone's gift doesn't mean he or she is smarter than others.
Gift affects many side, for example, your intelligence and personality. But, it is just resources! If you want to be good at something, you have to do effort like a miner who digs mine for diamond. People who are smarter or genius have their talent for study. They can't be intelligent without much efforts, though. I know a girl who has studied hard as a grinder. I think She has common brain, but she doesn't give up. So she has studied with desperate effort and always takes the first grade of most subject.
In my cases, I didn't like math and I'm not goot at math. But, I tried to solve a problem without someones help and I got a good grade on November's exam.

If we do something with sweet blood, we can do everything. I hope that everyone in our class is good at speaking English like Erika!