A child picked up a stone and broke the window of a shop  The child who did something wrong ran away  The shopkeeper thought he was unlucky  He took out a sum of money to buy the glass and reinstalled it  Now the glass shop made a small sum of money when it had a business With this money, the glass shop owner went to the bakery to buy a bakery and got a job  The bakery owner went to the farmers to buy a few jin of flour, but only a piece of glass was broken, but it led to the development of many industries in society, and even created job opportunities This is really an excellent case where a bad thing turns into a good thing
This virtual case is the broken window theory, a famous theory in economics
According to the broken window theory, breaking glass is conducive to social and economic development