Dear Jochen.
It is only now that I am daring to make comments on your excellent essay because your approach is quite another one as mine. But I think one is learning most with an open mind, so I made the following notes while reading your essay:
"the Newtonian, classical framework, can no longer be upheld". Why not, it is describing our daily macro reality quite good and can be used in many ways. In my opinion, it is the mixing up of the micro and macro, and then especially the quantum "world" that is leading to such remarks. The mainstream of 14 interpretations are created by agents inside an emergent phenomenon (reality) while they are themselves part of it and so are trying to UNIFY the two, while when we are splitting up our emergent reality and its source (in my perception: Total Simultaneity) we can treat them apart. A TOE needs not to be a unified theory of ALL but can be a theory that is dealing with different entities.
Quote
1. Finiteness: There is a finite maximum of information that can be obtained about any given system. 2. Extensibility: It is always possible to acquire new information about any system
Unquote.
I would add the following Finiteness: there is a finite maximum of information that can be obtained by an agent about a given system at a certain moment. Extensibility: no changes it already covers my addition in 1. (you also indicate this with "old" information.
The "Horizons of understanding" are in my perception limited by the borders of our emerging reality, the Planck units and the velocity of light. Heisenberg's uncertainty relation is just describing that at a certain moment there is the only position of a particle, the velocity is a relationship with a new moment in time and space. So velocity can only be measured inside the emergent phenomenon of reality. Superposition: more quantum states can be added together, every quantum state can be represented as a sum of two or more other distinct states. We are reaching out to the borderlines of our reality and nearing Total Simultaneity (unreachable) where each point can be represented as an INFINITY of distinct states. (phase space) Measurements are "events" that are time and space-restricted, so results are always from the past, and only dealing about ONE distinct state.
I think that the first part of your argument " But this means that there exist some state sg and measurement mg such that the value of mg(sg) cannot be predicted by f." should be extended to Any state sg and its measurement mg cannot lead to any "prediction". Because sg and mg are both events from the deterministic past, the future is containing still ALL probabilities, so is always indeterministic.
Entanglement and Bell's Theorem are also explained in my "Total Simultaneity Interpretation", and I hope that after reading these remarks you may be interested to know more about it. Of course, my essay is not so clearly written as yours, but it is quite a new approach to the essence of reality I think so I would be very obliged to hear your opinion.
You can find it HERE .
Best reagards
Wilhelmus de Wilde