This is exactly what most ideas are in this thread....
the·o·ry
/ˈTHirē/
noun
a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
"Darwin's theory of evolution"
synonyms: hypothesis, thesis, conjecture, supposition, speculation, postulation, postulate, proposition, premise, surmise, assumption, presupposition; More
as opposed to
fact
/fakt/
noun
plural noun: facts
a thing that is indisputably the case.
"the most commonly known fact about hedgehogs is that they have fleas"
synonyms:reality, actuality, certainty; More
used in discussing the significance of something that is the case.
noun: the fact that
"the real problem facing them is the fact that their funds are being cut"
a piece of information used as evidence or as part of a report or news article.
synonyms:detail, piece of information, particular, item, specific, element, point, factor, feature, characteristic, ingredient, circumstance, aspect, facet;
information