We are thrown out by the world. It is an accidental existence, which can not be selected. In such an accidental existence, we face the whole world, and we face the great contingency from the world. What does it mean that we live in this world? Everyone is left in a different position, just like those empty holes. With varying degrees of suffering, "fairness" is often untenable. It is more like a universal creed than a definite answer. Don't be pessimistic. People are uncertain and can prove the existence of change. What is the final result? This is the charm of uncertainty