Probability is in the mind. There’s no way to achieve entanglement between what’s necessary to make these predictions and the state of your brain, so for you, some of these are random.
In multi-worlds, the Turing machine will compute many copies of you, and there might be more of those who see one thing when they open their eyes than of those who see another thing. When you open your eyes, there’s some probability of being a copy that sees one thing and a copy that sees the other thing. In a deterministic world with many copies of you, there’s “true” randomness in where you end up opening your eyes.
I think he’s saying that there’s a simple-ish deterministic machine that uses pseudorandomness to make a world observationally equivalent to ours. Since it’s simple, it has a lot of the reality-juice, so it’s most of “where we really are”.
Probability is in the mind. There’s no way to achieve entanglement between what’s necessary to make these predictions and the state of your brain, so for you, some of these are random.
In multi-worlds, the Turing machine will compute many copies of you, and there might be more of those who see one thing when they open their eyes than of those who see another thing. When you open your eyes, there’s some probability of being a copy that sees one thing and a copy that sees the other thing. In a deterministic world with many copies of you, there’s “true” randomness in where you end up opening your eyes.
I think he’s saying that there’s a simple-ish deterministic machine that uses pseudorandomness to make a world observationally equivalent to ours. Since it’s simple, it has a lot of the reality-juice, so it’s most of “where we really are”.