發送短信 : The costs of information processing in an information ratchet system

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