(this question may need to go to sandbox for refining)
Leonard Susskind proposed that the surface of a black hole might be kind-of recording device for everything falling into it. Where 3D of space + 1D of time become 4 dimensions of space, practically.
I'm trying to imagine a culture living on or near one of these things. They have some properties:
- They can enter or leave at will (no more effort than taking a flight).
- Modern life would necessarily be digital beings, made of information (unless I'm mistaken).
- Something outside the black hole makes "updates" possible to the information stored in the black hole.
- It may be possible, through some other interference property, to update points in x,y,z,t without changing it.
- A thousand or a few million years of history are available as real estate for living. So you can stack people in both time and space.
- Because x,y,z,t are actually all spacial dimensions, cause & effect is now optional
- You can travel instantly (in relative time) to another x,y,z,t point; although there may be a non-zero absolute cost to moving.
- Probably possible to completely overwrite data in a spot of x,y,z,t to dedicate it to some present-day purpose. But would bemoan the loss of "greenfield" history to paving it over with the present.
What distinguishes a society living in, or in close proximity to, a Susskind hologram (assuming they exist)? Are there any benefits (over digital and physical real-estate) to living in one?