It depends. If your software lives in a rapidly evolving ecosystem and gets buggier with age, CalVer tells the user how important it is to update. If the ecosystem is stable and you want to inform the user about feature sets and bug fixes, SemVer makes more sense.

I never really understood the appeal of arranging severed plant genitals. Sure, it looks nice. But boobs also look nice, and I don’t cut them off and put them in a pretty bowl on my living room table.