[XBob]

36 - "As for antigravity, there is no theoretical or experimental reason to believe that such a thing exists. A search for the operating principle behind flying witch's brooms would be as wise a use of public funds."

Pardon me - please tell me what gravity is, since there is no anti-gravity.

seems to me there is a law of physics - for every action there is an equal and opposite reaction.

[Physicist]

Pardon me - please tell me what gravity is, since there is no anti-gravity.

It's the curvature of spacetime. Feel free to tell me what the opposite of that is.