Yeah but it makes a lot more sense in some contexts than others. Like, if you're talking about a religion or a political affiliation, membership in that group i

Yeah but it makes a lot more sense in some contexts than others. Like, if you're talking about a religion or a political affiliation, membership in that group is defined by some common beliefs or values. (Obviously people routinely generalise too far and end up using lazy stereotypes, I'm not denying that.) It's a bit more obviously arbitrary to generalise about a generation, unless you're talking pretty narrowly about e.g. shared experiences they had by virtue of growing up at the same time.