CopyPasteThinking is the act of using a predefined or commonly accepted thought process without analyzing it prior to use. The original thought process can originate from an individual, or from a group.
--JavidJamae (though GeoffSobering and LeviCook deserve credit for coining the term)
See also: OldRulesWithForgottenReasons, OldRulesWithOutdatedForces, TheFiveMonkeys