In recent years, the number of players participating in F1 racing has grown much faster than the number of F1 events. In addition, the application of 3D simulation competition systems has become more and more popular. The average number of F1 racing players who actually participated in the field F1 races in the past 5 years. It has dropped by 20%, and if this trend continues, the level of F1 racers will definitely drop significantly. The above argument is based on the following hypotheses? ['Many F1 racers now spend most of their time on the 3D simulation race system in order to stay in shape and be able to compete in the arena.', 'F1 racers can only maintain or improve their level if they are guaranteed to participate in a certain number of venues each year.', 'All racers, including F1 racers, usually have a much lower difficulty and intensity than previous years.', 'The field level of each F1 racer has declined in recent years.']