Very cool, if true

I just had this problem with the blog software I'm setting up: URLs were all of the form "blog/entry-title", but I wanted "blog/2021/entry-title" or even "blog/2021/10/entry-title" because, you know, I might want to talk about Yom Kippur in more than one year and I might reach for the obvious name. Without hierarchy I'd have to add temporal tagging, so that an entry might be tagged "Judaism" and "2021" and the combination of all tags + file name would need to be unique. I think I would find that hard to manage if I couldn't actually use hierarchy for the temporal axis, but maybe I'd get used to it. (I did sort out my URL problem.)