process of artificial intelligence is based on the genetic algorithm of neural network programs, which is basically the same as the biological process of establishing conditional reflex. Association is the basic function of the computer. When machines can solve problems through conditional reflex and association, we can say that machines understand knowledge.

The essence of knowledge is the ability to change the world. When AlphaGo triumphs over man, no matter whether we admit it or not, it has a capacity to change the world beyond humans. It is a superfluous issue or scholastic issue whether the machine has knowledge and understand knowledge. It is people who are having trouble with themselves. No matter whether people recognize it, machines will surpass people and dominate the future world.