No, i did think you were an RE-er, my explaination was for asterisque who believes the earth has no gravity due to mass. Which is absurd. I mean at least give yourself a fighting chance by saying we feel "gravity" beause the earth is accelerating upwards coupled with its gravity due to mass. That makes the net acceleration 9.81 ms^-2.
What causes gravity? Mass? Then why doesn't General Relativity play nicely with Quantum Mechanics?
Quantum mechanics deals with really small particles, smaller than an atom, quarks. General relativity deals with big things, like planets and galaxies. It's hard to put these two theories together, since the small and large world are radically different. The subatomic world is random and chaotic, while the large world is calm and predictable. For example, a quark has a 2/5 chance to be HERE, a 1/9 chance to be THERE, a 1/10000 chance to be NEAR and THERE at the same time, and so on, very chaotic, literraly impossible to predict. Planets and stars are not like that, they are easily predicable. Jupiter can only be in one place, not THERE and HERE
That's all well and good, but what about black holes? Oops!
Oops? Why oops?
Because you said this:
Quantum mechanics deals with really small particles, smaller than an atom, quarks. General relativity deals with big things, like planets and galaxies.
Remember? And, last time I checked, a "black hole" was something very tiny (Quantum Mechanics) and also very massive (General Relativity). Since GR and QM don't play well together, there's a hole in your theory. Hence the "Oops".
Might as well bring up the big bang, what happened then? What about souls, sicence cant explain weathet or not we have souls, so it must be wrong! Faster than light travel! We dont know how that works, in ohter words, all science is wrong!
You know what? Science is wrong. It is not perfect. Just like Newton's theory got replaced by Einsteins, science changes. And it is still not perfect, it cnat explain black holes, or time zero, or souls, or time travel, and many, many other things. But it is still better than still believing that the earth is flat! That theory is old, and it was thrown out long ago. It's like, again, comparing Newton's gravity with Einstein's relativity. We know that Einstein has a better picture than Newton, but Einstein is still not perfect. THIS is the concep that flat-earthers can't accept, change. Science changes, it is not perfect, deal with it.