Mathematically, the bagging principle is similar to adding quantities with different meanings, which logically violates "identity". This type of sophistry belongs to the concept of stealing, which is called "bagging principle" in mathematics Here are some examples:

There is a math problem in primary school: a pupil borrowed 500 yuan from his father, 500 yuan from his mother, bought a pair of leather shoes and used 970 yuan. The rest of 30 yuan paid his father 10 yuan, his mother 10 yuan, and kept it for himself 10 yuan. I owe my father 490, and my mother 490,490+490 = 980. Add your own 10 yuan equals 990 yuan. Q1Where did 0 yuan go?

This problem itself is a trap of thinking, that is, "bagging." The key to solving the problem is not to answer the question, but to find out the logical error of the problem itself. In fact, 490+490+ 10 is meaningless. The 490+490=980 mentioned in the question refers to the total amount of money owed to parents. This 980 consists of two parts, one is 970 yuan who bought shoes, and the other is 10 yuan owned by Xiao Ming. So the result of 980+65,438+00 is meaningless at all, but 980-65,438+00 is meaningful. If you follow the thinking mode of the problem, you will enter a "bagging".