Text this: The evaluation of time-dependent attributes

            _____              __   __    _____   
    ___    |  ___||     ___    \ \\/ //  |__  //  
   /   ||  | ||__      /   ||   \ ` //     / //   
  | [] ||  | ||__     | [] ||    | ||     / //__  
   \__ ||  |_____||    \__ ||    |_||    /_____|| 
    -|_||  `-----`      -|_||    `-`'    `-----`  
     `-`                 `-`