Theories and Proof - split from Quantum theory of gravity.

3 hours ago, Phi for All said:

Also, you should NEVER say it's "just a theory". A theory is far better than an answer (have you read what some people consider to be "answers"?). Theory is as strong as it gets in science. It's a guarantee we'll always keep working on the problem, and not just assume we know an "answer". 

Wise words......as per usual, generally anyway. 

I would put it this way though in my own language, that any accepted theory has been, as is continually further validated or verified within its zones of applicability. GR as an example has been further validated and verified with the discovery of gravitational waves, but is continually being worked on, and tested everyday. While it continues to pass these tests, it remains our preferred theory of gravity.