“In the last 100 years physicists did not understand Gravitation, that is why they did not understand Quantum Mechanics” Adrian Ferent

“I think I can safely say that nobody understands quantum mechanics” Richard Feynman

Feynman was right because all Gravitation theories are wrong theories.

The Observer in quantum mechanics explained by Ferent Gravitation theory:

Superposition fails when an observation is made, because there is energy to sustain this superposition.

That a quantum state remains in superposition until the difference of energies attains a small level:

Ferent equation for photon – graviton interaction:

E = h × f + a × f - a × ν

Quantum state gets broken up into a superposition of eigenstates: 

   |ψ) = Σ a_n|E_n)

You have learned from your professors that our quantum state |ψ) has "collapsed" into the eigenstate |E_n) with the probability |a_n|².

In Ferent Gravitation theory E_n = h × f + a × f - a × ν and is precise calculated  and is not a PROBABILISTIC event how you learned!

This means no superposition of eigenstates near a black hole, because the gravitons have high energy. 

https://www.academia.edu/23507496/Ferent_Gravitation_theory