Objective observers get pleasure discovering the world with senses in contact with sources and those sensations are both how observers discover knowledge and feeling about the world as well. There are no limits to what an objective observer can know besides the complexity of that knowledge, but there are limits to what a subjective source can observe about their own feelings about the world. There are even very simple things like observer feelings about the world that a subjective source can never know.
In particular, there is a property of people and matter called quantum phase coherence that entangles an observer with a source and so subjective observers are quantum observers. Although objective or classical observers can know and agree with others about the objective properties of a source, a quantum observer can only ever know the phase coherence of a source relative to their own phase coherence. Therefore quantum observer feelings about source phase is subjective since it is the observer's feeling alone and no other observer will have the same lifetime of experience and development from which their phase derives.
Classical observers suppose that the world as it really is has classical observers and sources pretty much running around on their own in a vast void of empty space and time. Classical observers do not bump into or affect each other very much and when there are couplings, those perturbations are all completely knowable in a classical determinate and causal universe. There is no self energy in a classical universe.
Continuous space and time are the cornerstones for classical observers and they can pretty much agree with other Cartesians about this Cartesian view, which is what makes a classical reality objective and why the world seems so classical. Cartesian action seems rather more like fate or karma than chance and the initial conditions of the CMB creation seem to determine all of what happens; classical action simply happens without any meaning or intent since classical action is determinate.
How a subjective quantum observer actually feels about the world is a subjective relational view that first of all supposes there is a purpose and meaning for everything that happens and there are no completely determinate futures. Quantum observers depend more on what other quantum observers and sources intend to do instead of what the observers and sources happen to be doing at any moment. A subjective quantum observer depends more on their feelings about sources as well as themselves instead of just on source properties at that moment.
A quantum universe cornerstone is with the exchange of energy and matter that are the actions between quantum observers and sources and quantum observers often feel very differently about the world as compared with classical observers. Since quantum feelings result from each of their own unique histories, quantum actions that result from quantum feelings are therefore not fated or determinate and there are instead many possible futures for both quantum observer and source.
There is a long history of discovery about the dual nature of the world of the body and the world of the mind. This is the duality of classical observers and subjective sources; how classical observers see the world really is versus how quantum observers and sources feel together about the world. Quantum observers feel that there is an inner life made up of souls and minds that coexists with an outer life of classical observers in the physical part of the world made up of bodies and brains.
Classical observers believe that since there is no objective evidence for an inner life of sources made up of souls, the actions of the mind are instead simply very complex and yet completely knowable as the brain matter of the same the outer life. Classical observers therefore believe there is really only one material world composed only of completely knowable observers and sources. An objective classical observer can know everything about the world and there is no meaning to any kind of inner life of quantum sources made up of just souls and minds.
However, there are things about a quantum source's inner life that a classical observer can never know. The subjective world that quantum observers discover by feeling and relationships with sources is different from the objective and material world that classical observers discover along with other Cartesians. The classical Cartesian observer can in principle know all objective properties about an object, and yet complex actions of other observers and objects also make up our material world and that complexity therefore limits what classical observers can know. The noise of chaos often confuses and confounds quantum phase noise, but quantum phase noise is different from the noise of chaos.
The quantum observer has feelings about the aether exchanges among people and sources of an inner life as opposed to the classical observer of people and sources of the outer life of things in and of themselves. In the quantum world of feeling based on aether exchange, while most relationships and feelings are objective and therefore knowable, there are many relationships and feelings that are fundamentally unknowable and yet are still a part of our quantum world.
Therefore discourse about the dual natures of objective and subjective reality are often confused by what a classical observer can know about the complexity of sources as people and relationships of their outer lives and what a quantum observer can never know about their own inner life. Although there are many things about their outer life that classical observers do not yet know, all of these things are still knowable albeit somewhat obscured by complexity and chaos. Yet there are some things about a quantum observer's inner life that are fundamentally unknowable and yet are still a part of the real world.
Although a classical observer can know everything about the path of a person or source in space and time, a quantum observer cannot know everything about the relationships of that person or source with other people or sources over time. Ironically, the things that a quantum observer can never really know are a part of uncertain futures of quantum relationships with other sources.
