The big bang theory is a theory and not a law of science. Laws of science are considered the closest science has to truth, while a theory is part way to the truth or else it would be called a law.
No. You are not using scientific terminology correctly. However, you can be forgiven for this since most scientists are crappy communicators and they don't use it correctly either.
A theory is a hypothesis that has been
proven true beyond a reasonable doubt. Heliocentricity, plate tectonics, relativity, evolution: these are all theories because they have indeed been proven true beyond a reasonable doubt. (Evolution is probably the strongest of the group because it is supported by evidence gathered from
two unrelated sciences, paleontology and genetics.)
The Big Bang should not be called a "theory." It is a
hypothesis. It is supported by considerable evidence, but the events at t=0 are still inscrutable to us.
BTW, the above describes only
scientific theories, which are derived from empirical observation of the natural universe. Mathematical theories, in contrast, are derived from pure
abstractions. Mathematical theories are proven
unconditionally true.
If BB theory was a law, we would take home all our tools, put them in a museum, and say we are finished. Technically, the big bang theory is part science truth, and part mythology, since it is not considered a law of science.
It has absolutely nothing to do with mythology. Myths typically have
no supporting evidence. In fact, to limit this to the myths that comprise the world's religions, they often
contradict empirical observations. For example, we know, to at least two significant digits, the total combined amount of water on Earth in the oceans as liquid, in the atmosphere as gas, and in the glaciers and ice caps as solids. Yet Abrahamic mythology insists that at one time the water level rose high enough to cover the Himalayas. This would require about six times as much water as there is!
That's the kind of preposterous bullshit that comprises
mythology. The Big Bang, to the contrary, is consistent with all natural laws and is simply waiting for more research to yield evidence that will either explain those events at t=0, or else falsify the hypothesis.
The mythology aspect of BB is important since this is how you connect to the layman.
Perhaps some laymen regard macrocosmology as mythology, but we regard it as a science and we treat it as such.
The common man may not be able to follow the elaborate mathematical and experimental staging needed to prove the claims of the theory. In other words, if you gave the layman the raw data would he draw the same conclusion or just stretch his head? They would need to blindly accept this proof based on faith in the experts. The mythology of the BB is something the layman can participate in, allowing the vague abstractions of science truth, an intuitive bridge for the masses.
Would you speak of relativity in the same way? Laymen can't understand that either. Yet they've all seen the photos of Hiroshima and Nagasaki, and many of them live in homes powered by nuclear generators.
Conceptual considerations to help deal with the BB mythology aspect.
These people don't need new conceptual considerations. They need more education. The average citizen has never even heard of the Three Laws of Thermodynamics. Without that knowledge, it's impossible to understand the competing hypotheses about the Big Bang.
What this means is, hypothetically, if space-time was already here, before BB, you can't tell until energy creates the needed contrast.
There is considerable support for the notion that there was no space-time before the Big Bang. Absent a pre-existing continuum, then it also becomes questionable whether the laws of nature existed either. Or the rules of arithmetic and logic.
Perhaps there's another universe somewhere that doesn't have space and time, but has some other dimensions that we could not observe. Perhaps also, 1+1 does not equal 2 there; and if all A's are B's and all B's are C's, there might be a few A's that are not C's.