"Then you lie about what RogueIsland said and say he said that the fact of gravity is in dispute"
You are falling into the same trap when you reference the "fact of gravity".
There is a Theory of Gravity.
Theories can be proven or disproven.
The facts pertain only to the results of the proofing, or tests.
There is no fact of Gravity, the word "fact" only pertains to what we observe in our testing of the hypothesis. If ever there is a test which disproves the current Theory of Gravity, then the theory must be thrown out or modified to include this new information.
So there is a chance that if I drop enough rocks ... one will go up instead of down.... :)