Futures is a zero-sum game or a negative-sum game, while options are not. Futures is actually equivalent to guessing the size of the casino. If someone opens more, someone will open an equal amount of space. One party loses, the other party gains, and then the exchange charges a handling fee. For options, buying options is equivalent to buying insurance, and selling options is equivalent to selling insurance. The relationship between buyers and sellers is similar to that between customers and insurance companies, and customers are protected.