Sorry, Mikal for spamming your thread , but I had another interesting thought regarding this and it involves compatibility or visibility.
Let's say that there exists an unknowable "true objective" reality "out there" and let's analogize life, similar to the analogy above of a current "spread" of estimates for pi, or similarly in terms of a physical analogy as a bubble that encompasses some volume of space compatibly - everything experienced would then be similar to either a refinement of the precision of pi, or in the bubble analogy, a continual expansion of this to include a larger volume of experiences.
Now if you look at anything "within" this, it's always a subcomponent of the totality of experience - for example, an object in ones experience could be considered similar to a smaller bubble contained within ones own totality of experience.
As another analogy, imagine a radio that can dial in some range of frequencies and that specific events and things in life are similar to specific channels within this range. Now if the total range of this increases, it can come to include new events.
If we go back to the bubble analogy, a "smaller" bubble seen/experienced within that could actually arise from the intersection between ones own space and an unlimited number of other possible "bubbles". It's only the area of overlap that is experienced - anything with the same form in the overlapped region would appear identical, no matter how it extends outside of ones own "bubble" and similar to the analogy of dialiing in different channels on a radio, that could be analogized to a specific channel potentially containing more information than was recognized while listening - in other words, there can be a growing depth or context to the same "surface" of interaction (and another analogy is similar to learning about depth in 3 dimensions by seeing or interacting with 2 dimensional surfaces over time).
Anyway, if we looked at what the largest volume of such a space would be, it would be compatible with everything in that space. Things contained within any space would then be subsets of this that excluded interactions with some components. So the "outward" direction could be seen similar to a growing comprehension or compatibility with elements in a space.
An interesting consideration here is that there are many ways to fill a space - a uniform expansion of a sphere is just one manner, but many detailed pathways could be constructed to fill a volume. For example, in order to reach some present moment, many different sequences of events in the past could lead to the same present moment and that could be seen similar to many possible pathways intersecting a point in this space.
If the space is infinite, then those pathways would be defined in terms of manners of growth and not specific positions (and that could be seen similar to a determination by ones values - those would define the manner of motion/growth in this as well as what things were seen to be contained within a space).
Anyway, this is something to consider with respect to "observational biases" - the source of growth is not contained within ones visible sphere, also, though any number of different shapes and sizes of these can exist, each individually describes its own totality and so this gives the uniqueness of the self-perspective - imagined external perspectives are only visible in terms of internal intersections - basically every "thing" is at its own center and only describes itself precisely. Witnessed components are contained by that doing the witnessing, though these witnessed components can extend arbitrarily far beyond those aspects that are observed/witnessed/known etc. to exist.
Again, the largest possible space described by oneself would appear to be most inclusive view and not leave any component out and so the totality of oneself would be that aspect that is not exclusive in any respect. (I'm not saying that's good or bad , but simply that such would appear to be that which describes all of what one is)
Those are just some more thoughts to kick around ... I do enjoy exploring ideas that push the envelope a bit!