I understand the extreme postmodernism and reductionism that permeates this post, and I have some sympathy for it.
But nonetheless, there's at least two points that your argument cannot account for:
1) if gravity is only a map, why it exists outside of our brain? Anyone can have their opinion about gravity, but that doesn't mean that a different map it's going to let you fly or have a different acceleration from the correct map;
2) why the brain, who is many, many orders of magnitude above the smallest constituents of reality, should be able to perceive the underlying territory with a simple and undefined things like "silent of all thoughts"?
1) if gravity is only a map, why it exists outside of our brain? Anyone can have their opinion about gravity, but that doesn't mean that a different map it's going to let you fly or have a different acceleration from the correct map;
Gravity is within arational reality, it's our label whether it is classical or modern physics. Gravity is a human projection. Your brain is a human projection. These things are easy logical conclusions, so should they be easily seen as such?
...2) why the brain, who is many, many orders of magnitude above the smallest constit
Reality is arational. Everything you do is arational. You aren't aware of it because you lack awareness. By becoming aware that you are unaware, you have increased your awareness. Yet still, you will always lack awareness. The same with me. My definition of awareness is the subjective experience of separating thoughts from awareness. You can become aware of thoughts, and if an "I" thought appears, that was not you, you simply became aware of it.
My point is that I think that you, confuse the map for the territory. Now I made the same mistake, because "map not being the territory" is a map. In all actuality, all types of communication are, and equally untrue.
The way I see it is that reality is the way it is and it is arational. Gravity does not exist. We may create a layer on top of arational reality and call it reality, while in all actuality it is a virtual reality.
It is simply a human projection on top of the arational reality. Arationality is completely independent of reasoning, everything rational and irrational exists within a matrix (virtual reality) of the arational.