You've got an attention span so impressive that people actually want to study you. But you don't have time for that; you're too busy coding, or tinkering, or thinking, or obsessively trying make the world a better place through invention with that savant-like brain of yours.
User: A symbol is _____. an intentional departure from the normal order, construction, or meaning of words something that is itself and also stands for something else a literal and concrete representation of an experience of the senses or of an object known by the senses.
A set of letters can be used to stand for anything you want, as long as you tell people who might use it what it means. 'PIN can be a device that holds a non-disposable diaper in place, or a wood-carved bowling ball target. Or it may be a TLA (three-letter acronym) that's used to represent the phrases preposterous idiotic nonsense, probably isn't needed, or personal identification number.