There are only so many days in the week. What would happen if there were more? What if all days were in the same week? What if there were no weeks, no months, no years, no evidence of the taxonomic scalpel?
I don’t know, except we’d have to say stuff like, “Looks like someone’s got a case of the today’s.”
Taxonomy is a tool whose application we’ve enjoyed without understanding, or even pondering, what it costs us.