Truth may have been found but might never be known.
Gravity is neither a force nor a consequence of any space-time curvature. It is simply an orderly spatial illusion to non-spatial observer/s.
The real doubt is the doubt that doubts that it doubts.
I have no proof for any proof.
Any systematic body of knowledge is science. The more systematic the body of knowledge is the more scientific it is.
Laugh and a moment will soon arrive when you cry.