Restrict propositions to observable references? (Or have a rule about falsifiablility?)

The problem with the observable reference rule is that sense can be divorced from reference and things can be true (in principle) even if un-sensed or un-sensable. However, when we learn language we start by associating sense with concrete reference. Abstractions are trickier.

It is the case that my sensorimotor apparatus will determine my beliefs and my ability to cross-reference my beliefs with other similar agents with similar sensorimotor apparatus will forge consensus on propositions that are meaningful and true.

Falsifiability is better. I can ask another human is Orwell post-Utopian? They can say 'hell no he is dystopian'... But if some say yes and some say no, it seems I have an issue with vagueness which I would have to clarify with some definition of criteria for post-Utopian and dystopian.

Then once we had clarity of definition we could seek evidence in his texts. A lot of humanities texts however just leave observable reference at the door and run amok with new combinations of sense. Thus you get unicorns and other forms of fantasy...