Quote Originally Posted by bu villain View Post
Some important clarifications:

Be careful when using the word fact. Everything in science is open to revision if new evidence comes to light and that includes the "Law of gravity".
"Theory" in "scientific theory" does not have the same meaning as "theory" in everday english. A scientific theory has much more rigorous a definition than "educated guess".
Even scientific LAWS are open to revision. See "general relativity" which better explains "gravitation"

Scientific law and theory are also two separate things. People seem to think a theory is a guess and a law is what the theory turned into. (scientific) Laws will always be laws and theories will always be theories.