A hypothetical argument that doesn't work. I'd hazard a guess that you're going to have a hard time finding ANYBODY who doesn't *believe* in gravity.
Walter Wright's Push Gravity: "Wright's basic idea -- which he says is borne out by his experiments and calculations -- is that gravity doesn't emanate from the earth's core, it comes from the sun. He argues that the sun, because it is a huge mass in a constant state of combustion, emits forces which push or 'squeeze' objects toward the earth -- like Newton's apple. [...] his novel ideas have made him a sort of guru to what he calls his 'following' of teenage science students, sci-fi fans and even some physical scientists he calls 'unbrainwashed' by Newtonian physics."There is no gravity in deep space: "Planets and stars can't form from gas floating in space because there is no gravity in space that can clump it together. If you think I am mistaken, I asked my girlfriend who is a biology/chemistry major, and a creationists, to describe to me gravity. She described gravity in a similiar way to me: only celestial bodies have gravitational forces in our universe. This is why there is no gravity in deep space. My girlfriend will major with 3.98 in science studies, so she knows what she's talking about. Now gravity doesn't exist between anything but celestial bodies, so atoms can't have gravity, and are held together by, as my girlfriend described it "not as gravity, but the atomic force between matter." Therefore it would be impossible for planets to form by random clumping of particles because there is no gravity in deep space. Liquids are made by the rate of collisions between atoms. We can't even "clump" gas on earth where there is gravity, how can you do it in freaking outer space where the concept of gravity is nil? I mean in the voidless wonder of outer space, how in hades is there a gravitational pull? Remember, it's a game of rolling the die and having to get one number out of a million. And gases move from a high density to a low density, thus that disproves the idea that gases could 'clump' in outer space. My knowledge of physics is quite limited, but to me it seems logical: only a defined mass can have a gravitational pull. I have the following questions for you scientists: 1. If gravity is a potent force that would cause gases to come together, why didn't all gas clump in outer space? 2. As my evidence speaks to the fact that gas can't clump on Earth, where gravity is much more potent. Thus, how could it occur in deep space? Clearly god created the universe."
Teaching the Fa : "In other words, although it's no longer in Earth's environment, it is still connected to the realms of other particles in the Three Realms. Only this way can it be stable there. This is the reason why a satellite can stay there. Of course, the same interconnection exists in objects of the same weight but of different volumes. An object that has a small volume but a high density has the same amount of interconnection as an object that has a large volume, so it feels like they weigh the same. There are many other aspects of this if I'm to go into detail. What I was trying to tell you just now is that "gravity" doesn't exist."
The misquided scientifically accepted theory of UNIVERSAL GRAVITY is ABSURD : "Current theories (and that is all they are) on Gravity say that gravity is relative to the mass of an object. So by that logic, the Sun would produce 1,000's of times more gravity than say, the Earth. A gravitational field that strong would eventually suck everything into it (like a black hole). It would constantly draw orbits of planets, comets, etc. closer to the sun. It would suck the Moon right out of orbit around the Earth. But this is not the case. It is a PROVEN FACT that our solar system is EXPANDING. The Earth IS NOT GETTING CLOSER to the Sun. Now let's look here on Earth itself. If gravity was responsible for keeping us DOWN TO EARTH then while I am standing upright in the United States people around the world in Australia would be UPSIDE DOWN. Additionally people in Europe and Russia would be on their sides. That is absolutely proposterous and probably the reason humanity believed the Earth was flat for as long as they did. [...] Gravity is ABSOLUTELY NOT a DIRECT EFFECT of an OBJECTS MASS. If it was you would not be able to drop a peanut and a gold brick at the same time, from the same height (inside a vacuum) and have them both hit the ground at the same time. Which by the way has been PROVEN over and over again. To boot the Sun would pull us off the surface of Earth, thru Earth's atmosphere, freeze us in the vastness of space, pull us towards the Sun for us to thaw just before we impacted the Sun and burned to Death."
Gravity Does Not Exist: "Mr Martin, of Austin Drive, Didsbury, a former labourer turned amateur scientist, has spent five years trying to get someone to publish his view that gravity does not exist, but without success."
Atlantis Rising: "In this issue we have articles claiming that heavy skyscrapers cause earthquakes, the 2004 Indian Ocean Tsunami was caused by oil drilling, the Templars worshiped John the Baptist as the Messiah, pyramids are actually giant radios, and that gravity doesn't exist, among other odd ideas."
Notes from Another Universe: Letters from crank theorists—often handwritten or manually typed, exhaustively diagrammed, up to a hundred pages long—have inundated university science departments for years. Neel Shearer, the graduate assistant who filters physicist Stephen Hawking's e-mail, says that Hawking receives "hundreds of letters a month, at least, mostly theories about how the moon doesn't rotate, why gravity doesn't exist, how to go faster than the speed of light." [...] Judging from the reams of odd theories sent daily to science journals, universities, and researchers, science cranks are more prolific than ever. This is true despite a discouraging silence on the part of the recipients. The author of one atmosphere-based theory of gravity estimates that he has mailed 5,000 copies of his work to physicists over the past 15 years but received just two replies. Presentation is part of the problem. "GENTLEMEN ARE YOU INTERESTED IN SEPARATING VALUABLE CHEMICAL COMPOUNDS FROM THE SUNSHINE RAY?" demands one impatient correspondent. [...] The few who did answer were single-minded. One retired commercial diver answered all my questions with an uninterruptible monologue on gravity (it pushes rather than pulls, he said).
If you believe that "micro-gravity" (on the scale of the solar system or a star cluster) acts just like "macro-gravity" (galactic and galaxy cluster scales), then one has to accept the existence of "dark matter".
There is nothing comparable in biology.
(ping to Rades, he knows this stuff a lot better than I do)
However, it is still "gravitational theory". There is far more direct evidence for the theory of evolution than gravitational theory.