What word or phrase describes the quality of an assertion to be inbetween a fact and an opinion?
Solution 1:
A hypothesis is a guess, based on data or logic of some kind.
So, if your hypothesis is: It is pointless to brush your teeth in the morning because no food has been eaten, not eating serves as the logic that bolsters your guess.
For a hypothesis to be viable, it needs be testable.
Solution 2:
Theory comes to mind
An assumption based on limited information or knowledge; a conjecture.
Synonyms: hypothesis, thesis, conjecture, supposition, speculation, postulation, postulate, proposition, premise, surmise, assumption, presupposition;