很容易证明：智力是天生的。两个人之间的血缘关系越近，智力也越接近。假如我们随意找两个不相干的人，其智力程度会完全不同。假如我们找两个双胞胎，其非常有可能智力相同。兄弟姐妹，父母孩子一般会有相同的智力，这显然表明智力是生来就有的。

How many people in the United States own a computer? According to a recent survey, three out of four American adults—76 percent—claimed to own a computer. Nowadays people use computers for simple tasks such as writing e-mail letters and for more complex tasks such as e-commerce or e-banking. Children use computers to play games, or they use them to do homework. With the popularity of personal computers, computers will be more advanced, and they will be easily accessible by people all around the world.

It is easy to show that intelligence is something we are born with. The closer the blood relationship between two people, the closer they are likely to be in intelligence. If we take two unrelated people at random, their degree of intelligence might be completely different. If, on the other hand, we take two identical twins, they will very likely be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth.