The Many-Worlds Reality
As explained in World Superposition, the world hologram, a field of information, is present in a very large number of worlds. Since they are all coincident and superposed, there is just one of this world hologram, and the effective physical environment is all of these worlds all at once. In other words, the world, meaning the real physical environment, of the world hologram is the many-worlds reality. From the perspective of the self-concept avatar figure at the centre, one is in all of these worlds, all at once. The resulting physical environment is the superposed sum of all of them. This is the QBism world. This is the reality defined by quantum theory.
Here it is important to make a distinction between objective and subjective reality. Objectively, the world is a single great big determinate cosmos. This is the foundation of the current paradigm. This is what the universe is actually like, as is evident from modern physics. We know this. But it turns out the subjective view is not just a point of view in the world of the objective view. It seems obvious that it is just that, but it is much more than just that.
The subjective view is the experience of the world hologram, in the universe of all possible worlds. Therefore, as described in World Superposition, it is the subjective view of a great many worlds all at once. In other words, the world of the subjective view is the many-worlds reality.
Thus, while objectively the world is a great big determinate cosmos, subjectively, meaning in the reality of the world hologram, the effective physical environment is the world superposition. It is a class-of-worlds-as-a-world, each world being a great big determinate cosmos.
Inside View Outside View
Naturally, the subjective and objective views are well understood in modern science. Here these are called the inside view and the outside view as described by cosmologist Max Tegmark:
I find it useful to distinguish between two ways of viewing a physical theory: the outside view of a physicist studying its mathematical equations, like a bird surveying a landscape from high above, and the inside view of an observer living in the world described by the equations, like a frog being watched by the bird.
They are different types of frame of reference. And it is this explanatory principle that is necessary to make sense of how things actually work.
Different Types of Frame of Reference
The inside view is the world hologram. As Tegmark describes, the inside view is defined by the record of observations, the central component of Everett’s famous many-worlds theory, as described in Many Worlds. As described in The World Hologram, it is the integrated synthesis of the record of observations that forms the field of information one encounters as the perceptual reality. This world hologram is present in a great number of worlds, and thus the inside view is the inside view of all of the worlds in the world superposition.
This is what gives rise to all the problems with quantum theory. When someone goes to do a physics experiment on the world, they are actually doing it on the world superposition.
That is the solution to Erwin Schrödinger’s famous thought experiment, the classic puzzle about quantum theory. Schrödinger’s famous cat is both alive and dead at the same time because Schrödinger’s world is the world superposition, and in that superposition some of the worlds have a live cat in them and some a dead one. The scientific principles are more fully explained in The Inside View and Schrödinger’s Cat in the technical area of the site.
We know the world is like this because quantum physics experiments (not on cats) demonstrate this very clearly. Unobserved, the quantum world is in a state of superposition. The problem is that as it is always objectively real when we look at it, it is hard to imagine it as anything else. The solution is the simple truth – it never is anything else. It is always solid and determinate in each and every objective physical world. It is the individual on the inside view being in many worlds all at once that produces the problem we have not been able to understand.
The resolution of the great paradoxes is simple. We just have to understand that there are two different types of frame of reference, and both are equally fundamental. Both types of frame of reference are attributes of the ontology. The objective view is the familiar one. But the one I am actually using, all unknowing, the frame of reference I am actually in, is the world superposition. This is the nature of the subjective viewpoint. It is an utterly different type of thing to the ordinary objective view of physics.
This is the full logical and ontological explanation of the world QBism describes. It is simply the many-worlds reality. This is the reality of the field of information one is experiencing. One is in all these worlds because this field of information defines all of one’s determinate identity on the inside view, as described in Identity.
The problem has been it all seemed to make no sense. This is why it has been invisible, as described in Paradigm Shift. The inside view is just the perceptual reality, the mental model I make of the world. This is just my personal view, so it makes no sense that it could possibly have any bearing on the real world. But while this is as true as it is obvious on the outside view, this is the opposite of the case on the inside view. On the inside view, subjectively, in the frame of reference in which one lives and moves and has one’s being, the world is determinate only where observed.
The apparent paradoxes are simply retrodictions of the nature of this type of world, the indeterminate world described by QBism, and physically defined by world superposition. This is the world one lives in, the many-worlds reality, as evidenced by the effective passage of time, with events taking place in the world. The explanation of this evidence is given in the following pages. So rather than seeing this as a great mystery, we can simply see it as confirmation we live in a many-worlds reality. As is also described in the following pages, this is an incredibly good thing.