What is 'how to win without relying on luck' that 'rock-paper-scissors pro' who has a record of 43 consecutive wins talks about?



'Rock-paper-scissors' does not require any tools and can be settled in a short time, so it is widely used as a convenient means for deciding whether to win or lose, such as 'deciding who can get the surplus pudding from school lunch'. .. Wyatt Baldwin, chairman of the

World Rock Paper Scissors Association (WRPSA), which pursues such rock- paper- scissors and holds up to the world championships, talks about the love to bet on rock- paper- scissors and ' how to win without relying on luck '. I am.

The best rock-paper-scissors players know how to win without luck
https://www.inverse.com/mind-body/rock-paper-scissors-not-sports

Established in 2015, WRPSA is an association for playing rock-paper-scissors at the competition level. The reason why rock-paper-scissors is attractive is that there is no age limit, no weight training is required, no weight training is required, no advance preparation is required, and no cleanup is required after the match. 'The results are not affected by age or gender,' and emphasizes the fairness and convenience of rock-paper-scissors.



Chairman Baldwin, who founded WRPSA, is a hardcore rock-paper-scissors enthusiast with a record of 43 consecutive victories. While running the association, '

The Rock Paper Scissors Handbook ' that covers the rules and strategies of rock-paper-scissors in the east and west, and for learning rock-paper-scissors that depicts the friendship of anthropomorphic stone, paper, and scissors. He has been energetically working on the spread of rock- paper- scissors, such as publishing the picture book ' The Rock Paper Scissors Story '.



'Rock-paper-scissors is a sport because it is a sport that can compete,' says Baldwin. Mr. Baldwin said that there are three important tips for winning with rock-paper-scissors: 'do not put out first,' 'make random moves,' and 'understand the reading of the opponent.'

According to Baldwin, the first step in improving rock-paper-scissors is not to 'first-out', which is an action that makes you know what you are trying to do before the game. Beginners tend to clench their hands too much just before putting out a goo, or open their index finger a little just before putting out a choki, so they may have taught the other person what to do. Therefore, Mr. Baldwin pointed out that 'first-out is the worst, and if you do this, you will be disappointed if you are an amateur who is weak in psychological bargaining.' When I challenged rock-paper-scissors, I urged him to put out his hand at the right time.



Regarding 'choice of hand to put out' which is the core of rock-paper-scissors, 'random is the strongest'. The strategy of issuing each goo, choki, and par with a one-third probability makes it impossible for the opponent to predict the next move, so it seems that it is in a state of '

Nash equilibrium ' in game theory. However, research has also shown that it is difficult for humans to 'randomly move'.

354 subjects each played rock-paper-scissors 300 times (PDF file) According to an experiment at Zhejiang University, there were two tendencies in the hands of the subjects. The first tendency is that if you win, you won't change your hand. Subjects tended to stick to their hands if they were winning and to change hands if they were losing. The second tendency is to 'change hands according to a certain rule'. When I changed my hand, I changed my hand from 'goo to par', 'from par to choki', and 'from choki to goo', and I didn't change my hand much in the opposite direction.

Furthermore, according to a WRPSA survey, statistically, the probability of issuing a goo is 35.4%, the probability of issuing a par is 35%, and the probability of issuing a choki is 29.6%. 'The best rock-paper-scissors players understand these differences,' said Baldwin.



Regarding the point of 'understanding the reading of the opponent', Mr. Baldwin was a member of the team that won the 2002 and 2003 world championships, which is often called ' Michael Jordan of the rock-paper-scissors world'. I explained his strategy. Mr. Watson is a person who played a serious game with Mr. Keisuke Honda in the PEPSI JAPAN project '#Honda and Rock-paper-scissors 2020'.

[Incandescent game] Keisuke Honda, serious game with 'Janken former world champion' PEPSI '# Honda and Janken 2020' --YouTube


Before the match against Keisuke Honda, Watson said, 'For example, if you observe you ... he's a strong man and macho. That means I'm going to put out a goo,' he said about his reasoning. According to Baldwin, 'this kind of guessing doesn't always work, but it's important.'

Some experienced players may close their eyes or decide on 3-5 moves to allow random moves to avoid the influence of their opponents. Mr. Baldwin positions it as important when challenging rock-paper-scissors as a competition, 'to suppress one's own bias while pushing the human bias of the opponent.' Mr. Baldwin commented on the deciding factor of victory, 'Players who are familiar with rock-paper-scissors strategy are strong in rock-paper-scissors because they know what they are doing.'

in Note,   Video, Posted by darkhorse_log