Suppose you know everything about the past, present, and future of the universe in complete physical detail, but you don’t know where YOU are in space-time
You can’t know the future in your example because the agent “You” can change it. You can only know the past and the light cone that cannot be affected by your actions. That then precisely locates you in space and time. For example if your first action is to use a fully random number generator, then knowledge of the future affected by that is impossible. (You could also scan the entire past/present/future for a string/pattern that does not happen and broadcast it, also breaking the assumption)
If we are talking about the real world (to the best of our current knowledge, yada, yada) and not its classical approximation, we have the universal wavefunction as the world model, which is independent of agent’s actions as it encompasses them all.
Interacting with the world (by generating a specific pattern) allows to narrow down indexical uncertainty to all the agents that generate the pattern with non-zero probability.
You can’t know the future in your example because the agent “You” can change it. You can only know the past and the light cone that cannot be affected by your actions. That then precisely locates you in space and time. For example if your first action is to use a fully random number generator, then knowledge of the future affected by that is impossible. (You could also scan the entire past/present/future for a string/pattern that does not happen and broadcast it, also breaking the assumption)
If we are talking about the real world (to the best of our current knowledge, yada, yada) and not its classical approximation, we have the universal wavefunction as the world model, which is independent of agent’s actions as it encompasses them all.
Interacting with the world (by generating a specific pattern) allows to narrow down indexical uncertainty to all the agents that generate the pattern with non-zero probability.