Why my baggage needs to go thru X-ray to go out of airport in Panama City? Is it OK to create a third prong ground from a cold water pipe, for a 2-wire circuit? Is staying in the first job for a long time (>2 yrs) a bad thing?
Proposition is a statement about observable phenomena(concepts) that may be judged to be true or false.When a proposition is so formulated for empirical testing ,we call it a hypothesis..As a declarative statement about the relationship between two or more variables, a hypothesis is of tentative and conjectural nature.
In everyday speech, the word theory is used as a best guess. In modern science, a scientific theory is a tested and expanded hypothesis that explains many experiments. It fits ideas together in a framework. If anyone finds a case where all or part of a scientific theory is false, then that theory is either changed or thrown out.