How to understand the profound meaning of the joke "one pole goes to town"

After reading the joke "One Stick Into the City", I want to say to the people in the story: Don't be smart, think more about getting things done.

This joke satirizes the Lu people who are stupid and unwilling to think, and the stupid and clever old people, telling us to think more when we encounter difficulties, and not to blindly believe if we need to ask for other people's opinions.

The story of going to town with a pole:

There was a man in the state of Lu who walked into the city gate with a long pole. At first he stood up and held it, but he couldn't get into the gate. He came and hugged, but he couldn't get into the gate. I really can't think of a way. After a while, an old man came and said that I am not a saint, but I have seen many things. Why not use a saw to cut off the long pole and enter the city gate?

So the Lu people listened to the old man's method and cut off the long pole. In fact, there are many examples in real life now: some students are doing problems and give up thinking when they encounter problems. The unknown problem is that we limit the three-dimensional Euclidean transformation to two dimensions, which will lead to no solution.