Zeus69
Secular Humanist
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Some definitions:Might change my mind if it ever becomes The Big Bang Law, but it's a theory right now, so you're just picking between what you choose to believe in w/o empirical data. I.e., faith.
Fact: A demonstrable object or event, a phenomenon perceivable to everyone and anyone via the senses
Law: A mathematical expression describing an invariably-occurring phenomenon in quantified terms
Hypothesis: A question that a single experiment can answer
Theory: An accounting or explanation of all the known phenomena
The idea of a scientific law does not intersect with the concept of a scientific theory. A "law" is not a promotion for a "theory." These terms refer to two different things.
~ A law is a mathematical description of an entire regular phenomenon.
~ A theory accounts for or explains all the observed phenomena. It is testable, falsifiable and makes predictions.
The word "theory," when used in a scientific sense (like germ theory, cell theory, gravitational theory or the theory of relativity), does not mean an unverified guess or idea. In scientific terms, that would be a "hypothesis." Instead, the word "theory" describes a system of interrelated laws and principles that have been tested, validated and confirmed and used to describe a particular area of observed reality. In other words, you don't get to call something a "theory" in science unless it has been proven true.
Scientific theories don't die, but they don't stay the same. They are continuously refined and improved in detail. And, every so often, a theory is proposed that beautifully encompasses an "old" theory or group of theories in a much larger framework. Newtonian physics never died, but it was enveloped in relativity. Electromagnetism didn't die but was enveloped in quantum mechanics.
Big Bang cosmology is the best current model for the universe's origins, even though we don't understand it entirely, and it could be wrong. It describes the expansion of space and time. The organization came about gradually due to physical forces, particularly gravity. Gravity pulled clumps of matter together to form stars and groups of stars and galaxies. The pressure at the core of stars caused fusion which generated light and heat. Eventually, the first stars exploded, which yielded the higher elements from which planetary bodies formed, and these were also pulled together by gravity. It isn't an attempt to explain the existence of the universe. Instead, it describes a time some 13.7 billion years ago when the universe began to change from a sweltering and dense state to a cooler and less dense form.
The Big Bang Theory made testable predictions. Then scientists verified those predictions with experiments (e.g., cosmic background microwave radiation levels). It's the best available explanation confirmed by evidence.
As far as the "faith" claim. I can't argue against people's personal revelations or against a claim to argue on faith. I see no good reason to argue anything on faith since that's the excuse you give when you don't have a good reason to believe something. If you have a good reason, you do not have to rely on faith. Why would you appeal to it as long as faith can be used to justify equally competing claims?