Hey, it’s just a blog, right?
Citing my favorite source, Wikipedia, phase space is
“a space in which all possible states of a system are represented, with each possible state of the system corresponding to one unique point in the phase space.”
A particular system might occupy only a fraction of its possible states during its existence. The phase space can be described as an array of probabilities that the system will actually occupy any particular state. So if an object is to include the entirety of its phase space, then the object contains not just its actual state in a given moment in time, nor even all the states it occupies during its lifetime, but all the possible states it could, with probability > 0, achieve during its lifetime.
This is a rather abstract description of an object, including a whole array of potentialities that are never actualized. So, e.g., the chair I’m sitting in would include in its objecthood all the possible physical places it could occupy in the universe. The probabilities are highest for its someday occupying some other space in the living room, but the probability is greater than zero that someday it might find itself sitting someplace in upstate New York. The chair’s potential to be pretty much anywhere on earth at some point during its lifetime could be regarded as an important aspect of the chair that doesn’t participate in its interactions with me or with the other stuff in the room it currently occupies. But I don’t see how the chair’s potential to be elsewhere is withdrawn from its current interactions here and now. The chair is indifferent to being moved; it resists only in a purely mechanical sense of being stationary and, as an inanimate object, incapable of autonomous movement. But if the moving men came and put the chair in a truck, the chair will cooperate. Potential doesn’t withdraw from its own actualization. Rather it’s a matter of probabilities, which seem neutral rather than withdrawn.
The quarter sitting on my nightstand is currently in the heads-up position, but it contains within itself the potential to be tails-up. If I flip the quarter it’s not going to resist coming up tails.
The probability approaches 100% that I will still be an embodied living human being when I post these thoughts on the blog. The probability approaches 100% that I won’t still be an ELHB 60 years from now. The possible trajectories I could have taken in the past are withdrawn save for one: the actual path that I took. The further into the future I project my potential existence, the greater the likelihood that one day I will visit Ulan Bator or any other remote location on earth that’s part of my low-probability geographical phase space. Some day though, all my futures will join my pasts in being fully used up, fully withdrawn from actualization.