You said stable identifiers come with karma and likes. But you know they come without also.

I mean - yes? I understand what a stable identifier is. Having a unique user ID in a database doesn't magically enable likes on all features. But for the purpose of this discussion I limited my opinion to "public services", i.e. services with a social aspect, which overwhelmingly have this mechanic (to such an absurd extent that I can "like" payments made by people I don't know on Venmo).

> I understand what a stable identifier is.

You do not understand what core is apparently.

From what I understand "core" is a central part of a fruit.