Quantum field theory mostly gets thrown out the window.
This is about the half of QM that physicists don't like to talk about, when an object in superposition can only be described as math waves. The question of what matter is while in that state has chewed away at me for years. I think I found the answer; Quantum objects literally swap to waves when disconnected from spacetime. Yes, that's right, I'm saying QM floats above the fabric of spacetime. Observation grants quantum objects partial/temporary spacetime.
An, yet, unspecified/unknown number of chemically bounded atoms are always anchored to spacetime.
When we zoom into a large object, those atoms bonded together are not going to display quantum weirdness. If we separated a single atom from that object, it is suddenly too small to inhibit spacetime. I knew it was losing a dimension of some type and originally assumed a 3D object was turning into 2D (something without depth is invisible to us) ..but then the math said it actually retains its 3D (u/racinreaver). It dawned on me that objects without spacetime are also invisible to us. I then looked at the uncertainty principle and realized that the particle was not completely inhabiting spacetime.
If my hypothesis is correct,
something should be strange about time for quantum objects ..and it is.
Maybe something in superposition doesn't age.
They won't ever find quantum gravity.
will probably give new insights into virtual particles, dark energy and dark matter.
I like to think doing an experiment that shows the Uncertainty Principle also shows a dimension not fully realized (wave isn't fully collapsed ..or doesn't fully possess the full dimension of spacetime.)
We should be able to find the QM/Spacetime divide by sending larger and larger groups of bonded atoms into an Uncertainty principle experiment, when groups with momentum stop being fuzzy, we will have our number of atoms it takes to always be anchored to spacetime (wave completely collapsed).
We are looking in the wrong place to quantize time and gravity.