- 621

- 5

## Main Question or Discussion Point

A short answer to this question is perhaps "symmetry", or one might specify the properties that define a group (closure, associativity etc.). But are there less precise and more general ways of describing group theory that someone could point me to --- ways that perhaps better express the universal flavour of this subject? Something along the lines of "group theory is a way of classifying changes among the elements of a set of similar entities"?

It's such an abstract subject that I find it as difficult to describe as say, the counting numbers.

It's such an abstract subject that I find it as difficult to describe as say, the counting numbers.