According to the requirements of the topic, conventional shortening is impossible. One way to make the stick relatively short is to find a reference stick longer than the stick to make the stick appear shorter. Reference is a physical term that refers to another object on this object. Including cars, ships, planes, etc. When an object is above this reference object, the object on the reference object is stationary, but the reference object is moving.

This is a typical brain teaser, which means that when thinking encounters special obstacles, you should quickly leave the habit of thinking and think about the problem from other aspects. Now refers to some intellectual questions that can't be answered by the usual way of thinking. Brainstorming covers a wide range: educational, funny, mathematical, adult and so on. Brainstorming is a kind of entertainment and a popular word game.

An example of a brain teaser

1, Lao Wang has to shave forty or fifty times a day and still has a beard on his face. What is the reason?

Answer analysis: Lao Wang is a barber.

2. Who does the dung beetle dislike the most?

Answer and analysis: dung beetles, a fart man, likes to eat feces, and mostly feeds on animal feces, so he has the title of "scavenger of nature". Naturally, he doesn't like people who only fart and don't produce feces.

3. Why doesn't Wu Dalang like biscuits?

Answer analysis: Because he wants to grow taller, Wu Dalang is a famous dwarf, and all dwarfs want to grow taller. Sesame cakes are not to his taste, so he is naturally higher in choosing food.

4. He can do it, so can I, and so can people; One person can do it, but two people can't. What is this for?

Answer and analysis: dreaming.