1. There is no objective reality
2. So, all "reality" is subjective / stems from the mind
3. All things on earth (including inanimate objects) are effected by gravity
4. Based on 1 & 2, gravity is created subjectively by each individual mind
5. So, someone should be able to change their perception and not be bound by gravity
6. 5 is impossible
Therefore, 1 & 2 are false.
This is a strawman of my argument in the other thread. So let me refine it
1. There is no objective OR subjective reality, because there is no such thing as an observer or 'I'(supported strongly by neuroscience) then none of the objects we observe and the inferences we draw from them actually exist
2. Gravity etc is a theoretical concept that we have drawn by observing objects fall in our
perceived objective reality and then explaining it through formal inferences. There are several theories of gravity we have formed so far: Gravity as a force(Newtonian) gravity as a wave or disruption in time and space(Relativity) and recently gravity as quantum effects of higher dimensions(String theory)
3. Gravity exists as an
observed effect in our empirical/phenomenal reality, hence insofar as we are a part of empirical reality, gravity exists for us. However, at the fundamental level of reality such as the quantum, space, time, matter and gravity do not exist. Hence, we can exploit this fact by developing quantum technologies which are not bound by classical laws e.g., quantum entanglement does not obeys classical physics which posits that nothing can travel faster than the speed of light, but indeed we routinely now send information thousands of times faster than the speed of light.
In quantum levitation we exploit the fact that gravity does not really exist and levitate nanoparticles(theoretically, we could levitate a human or any macro object)
In phenomenon such as quantum tunneling, where we know particles can pass from one point in space to another without travelling through space, this can be exploited to theoretically send an object through a solid hard wall, because we know in fact that solidity does not exist.
In fact quantum physics theoretically allows for many possibilities such as backwards time(a broken glass reforming into glass) because in quantum physics because time does not exist, there is no arrow of time or reason why time should flow in any direction.
The claimed siddhis of Yoga and Buddhism are based on the same principles we use in quantum physics today. As a yogi knows that time, space, gravity matter etc do not really exist, they exploit this fact and are able to perform feats like levitation, waking on water, teleportation, walking through walls, telepathy etc . Of course, I do not expect you to believe this is possible without empirical evidence, but the fact that in quantum physics this is possible means that none of these feats are actually theoretically impossible.