definition
Source of authority refers to a clearly defined conceptual difference or boundary concept in the context of decision and system logics.
Comparison model
The term "source of authority" is understood as a conceptual comparison in which two named concepts are distinguished from each other along defined criteria, without establishing an evaluation or preference.
Demarcation
Are you 18 or older?
It looks like you're not old enough to shop with us, come back when you're 18 or older.