If you think about what is the most valuable thing in life, then many will say that time. Your own time. And understanding its value also relate to other people's time. "Time is money" - these words came from America, the slogan of business people. But the truth of these words was intuitively felt by people of all countries, from ancient times. Some scientists argue that time is being itself, life itself. And the value of these categories is beyond doubt. And many of the actions of people are based on competition for the possession of this value - time. So in chess battles, the main recipe for success is to build up the pace. There is even such a chess expression: “to sacrifice a piece for the sake of tempo”. And the masters of this game, for the sake of gaining time, sacrifice any of their pieces, even such valuable pieces as the queen. In real battles, this principle is even more pronounced. The main law of war says: "Whoever wins time will win the war." And for the sake of gaining time, the lives of real people are sacrificed, and equipment worth billions of dollars burns in a flame.