發送短信 : Every random choice rule is backwards-induction rationalizable

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 | |/ // | || | || |  __ \\   /_   _//  | |/ // 
 | ' //  | || | || | |  \ ||   -| ||-   | ' //  
 | . \\  | \\_/ || | |__/ ||   _| ||_   | . \\  
 |_|\_\\  \____//  |_____//   /_____//  |_|\_\\ 
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