You know why anti-gravity aircraft exist? Because gravity was just a theory.
Walk off a cliff and find out mate.
I'd fall. Not because of gravity but because my body density was greater than the air surrounding it.😎
This begs the question then of why it matters whether your body is "denser" than air or not, why do you fall because you are denser?
Why not rise?
Claiming that you are denser does not explain why you fall, only that you are denser.
You haven't explained why dense things fall? You can talk about displacement of the same volume of space with a heavier mass/weight all you want, but that doesn't answer the question.
You fall toward the Earth right?
Why?
