5 ms·Why does clean code matter?3 points by yanis_t 9y agoFinnucane 9y agoWell here's your problem: "Now let’s look into the credit_card_expired method: def credit_card_invalid(user)" The method being called has a different name than the method being defined. Sure, clean code matters. Proofreading matters too.yanis_t 9y agoThanks sir, fixed that