"Boiled Frog in Warm Water" explains the principle of changing from quantitative change to qualitative change, and illustrates the principle of losing alertness and causing disaster due to adaptability and habituation to gradual changes. A sudden enemy often comes at the moment. People can make unexpected defensive effects. However, in the face of a comfortable and satisfying environment, people often become uninhibited and relaxed, which is also the most fatal kind of relaxation. In a comfortable environment, people are easily distracted by the surrounding environment. Being confused will eventually lead to depression, indulgence and depravity. Because this process is a step-by-step change, people will complete the entire transformation without being aware of it, and it will be too late when they wake up. On the contrary, if people suddenly change from ". Throwing "heaven" into "hell", due to the huge gap, people's reactions are also very strong, so they can make choices quickly, so that they don't know how they died in the end.