JohnR7,
I think you may be oversimplifying what a scientific theory is, just to make your point. Scientific theories may start out as simple assumptions or interpretations, (hypothesis), but that is not the end of it.
Here's how it works in the scientific community. (roughly)
When observations and measurements are made by a scientist, he/she may develope a hypothesis, based on interpretation of the data. If so, the scientist 'tests' his/her hypothesis by trying to disprove it. When satisfied, confidence gets higher, and the hypothesis is then tested by his/her colleagues, again trying to disprove it. When satisfied at this point, confidence gets even higher, and the hypothesis is sent to a board of referees, who look at various methods used, flaws in testing procedures, etc. When accepted at this level, confidence begins to soar, and the hypothesis is published in international journals, to be scrutinized by worldwide scientific peers. If accepted at this level, confidence goes through the roof, and just
maybe, it will earn the title of a scientific 'theory'.
In the scientific community, a 'theory' is extremely high in the confidence level, and should not be confused with the layman's term of a theory, (which could mean some half-baked idea, speculation, or guesswork).
So, in the context of science, to say, 'It's
only a theory', is akin to refering to a top athlete as
only a Gold Medal winner.
Most scientific assumptions or guesses, never earn the title of a scientific theory.
I really hope everyone can truly grasp and fully understand this concept.
John