Different world outlook, standpoints, ways of thinking and knowledge structure are all factors that affect people's critical thinking ability and level.

Example:

1. Sometimes the wind blows and drifts, one monk says it moves, another monk says it floats, and the benevolent moves. This kind of speculation can't be learned.

2. Two children distinguish the sun. One child thinks that the sun is closest to the ground at noon and farthest from the ground at night. The reason is that the sun shines, and it is near hot and far cold. Another child thinks that it is farthest from the ground at noon and closest to the ground at night. The reason is that the near is big and the far is small. This guess is not valid.