Every field probably starts with some basic rules, but rules can change

If you believe these rules are unchangeable, i.e., these rules are always RIGHT. Then what's the difference between these rules and religion?

Newton's law was the basic rule in Physics, but later proved to be limited by Einstein. It was working perfectly fine until human finally get out of earth and break into the space.
Who knows whether Einstein's theory is RIGHT or WRONG. Probably someday it will be proved limited as well.

What's really RIGHT and what's really WRONG. I really don't know.

"Newton's law has since been superseded by Einstein's theory of general relativity, but it continues to be used as an excellent approximation of the effects of gravity. Relativity is only required when there is a need for extreme precision, or when dealing with gravitation for very massive objects." -- wikipedia