The answer to the Why dont you use it? hit for Duran Duran in 1983 in CodyCross is THEREFLEX. CodyCross is an amusing word game. It is a word play game that challenges one's word knowledge in different categories and themes. If this clue had you baffled, you're not alone! Many of the puzzles in CodyCross are pretty tricky, but that's what makes the game so fun.