yes, but no. Something that always happens except when it doesn't. Its when you do your equations correct and you will always get this answer except when you don't. An answer you will always sometimes get, except for when you dont.

It’s an acronym standing for Can’t Remember A Fucking Thing. It’s usually used to describe embarrassment at being unable to remember someone (CRAFT moment); going onstage as the lead in the latest theatrical performance and your mind goes completely blank (CRAFT situation); the next morning after a night when you got pissed as a fart and woke up in bed cuddling a traffic cone and a string of fairy lights wound round your prick.