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Why did Mr Wen Yiduo give students a math problem with 2+5= 10000?
This is to point out the importance of art development to his students. That is what people call imagination.

Since 2+5 = 7 is indisputable in the field of mathematics, why is 2+5 = 10000 possible in the field of art?

Wen Yiduo once gave a class to a student. He went to the podium and first wrote an arithmetic problem on the blackboard: 2+5 =? The students are confused. However, Teacher Wen insisted on asking: 2+5 =? The students then replied, "It's equal to 7!" Mr. Wen said: "Yes, in the field of mathematics, 2+5 = 7 is irrefutable. However, in the field of art, 2+5 = 10000 is also possible. " He took out a painting called "Wan Li Pentium" for students to enjoy, and saw two galloping horses conspicuously painted behind him. Behind these five horses are many fuzzy black spots. Mr. Wen pointed to the painting and said, "From the image of the whole painting, there are only seven horses before and after. However, anyone who has seen this painting will feel that there are thousands of Ma Benteng here. Isn't this 2+5 = 10000? "

In the process of human cognition, there are irrational factors as well as rational factors. Irrational factors refer to people's emotion, will, fantasy, imagination, intuition, inspiration and other illogical forms. Irrational factors can drive, induce and enlighten cognitive activities. In artistic activities, due to the role of irrational factors such as imagination in people's cognitive activities, 2+5 = 65438.