I have always wondered why we have Newton's/Snell's Laws but
Bernoulli's/Archimedes' Principles. I feel this discussion is important,
but it is confusing for students. Hypothesis, theory, and law should have
distinct meanings and be used properly.The Big Bang is only a theory and
can never be "proven," but Newton's Law of Universal Gravitation has
worked very well and has never been disproven.