Do we need a foundations tag? I removed one from a question yesterday, and it appeared on another sometimes later.
I'm not sure whether or not they are actually useful, but since some people do think they might be, I figured a meta thread is in order.
Okay, it seems that the general notion is learning towards indifference and favouring keeping the tag. That's fine. But I think we should decide what should be in it.
Someone had asked a question about proving the existence and uniqueness of remainders in division of natural numbers. Clearly not a foundational issue as most mathematician would think of it.
I propose that we rename the tag to foundations-of-math or some other $\leq25$-letters variation that will tell newcomers that this is tag for foundational issues, and not "elementary" issues from the first steps in mathematics.
The second thing, I think, is that we need to get some general notion of what fits under this tag. Borderline philosophical questions? "How to develop X within Y"? What is the best beer for set theoretical work? And so on.