On the topic of gravity existing or not:Hey kids. Lets play: Use the scientific method. Ready? Ok.
Stand up.
Walk outside.
Pull out your handy-dandy science notebook and jot down the fact that your feet fall to the ground after each step.
Now, the big experiment.
Jump, a few times if necessary.
Did you float away?
If you didn't float away into oblivion, and you fell back to the earth, that means that you just proved gravity existed.
Gravity is the pull and/or force of a massive object's (like the earth's!) effect on a much smaller object (like you!).
And you just got to experience it! Congratulations! Now wipe the dirt off of your rear, wipe the tears out of your eyes, and suck it up. You just got disproven, and you did it all by yourself.
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Seriously, overthink much? All you had to do was walk around and prove this to yourself. Given, obviously out there in space the effects are far more epic in scope and scale, and therefore that much more impressive, but come on.
Another thing: If the earth is just a flat disc in space, and it gets hit by a meteor or asteroid, or what have you, what happens? Objects aren't bolted into the nothingness. Taking a note from another post about one of your comrades, "Believe," who, by the way, you took the time to immediately bow down to the "wisdom" of here (
http://theflatearthsociety.org/forums/viewtopic.php?t=777 ), apparently the lot of you is of the belief that the sun, moon, and stars just hang in the sky in place where they are no matter what. Well, given that you are privy to the notion of objects being able to move around in space, and taking your example of the "tons of [matter]" hitting the earth, eventually this "disc" of which you speak would begin to spin like a coin being flipped. This would explain the rotation of the sun, moon, and stars in the sky, true. However, given the
factual notion that there have been instances in which one person on this planet has seen the sun/moon/stars while another person on the
opposite end could not see the same celestial objects, and given that the whole basis of your belief is that the entire earth rests on one side of a disc-shaped object (lest we fall off the "bottom," according to your own belief system, so don't try and pull any mystical "dark-side-of-the-disc-dwellers" jazz here), this is a paradoxical situation.
Given that, in reality, no instance in which a paradoxical flaw exists is true, we can very simply conclude that, since I have shown that your belief contains at least (although I doubt this is the only) paradoxical flaw, we may conclude that it is false.
Good game.