In the “software twins” thought exercise, you have a “perfect, deterministic copy”. But if it’s a perfect copy and deterministic, than you’re also deterministic. As you say, compatibilism is central to making this not incoherent, presumably no decision theory is relevant if there are no decisions to be made.
I think a key idea in compatibilism is that decisions are not made at a particular instant in time. If a decision is made on the spot, disconnected from the past, it’s not compatibilism. If a decision is a process that takes place over time, the only way Omega’s oracular powers can work is if the part of the process that causes you to look like a one-boxer can’t be followed by the part of the decision process where you turn on a dime and open both boxes. But the earlier part of the process causes the later, not the other way around.
In the “software twins” thought exercise, you have a “perfect, deterministic copy”. But if it’s a perfect copy and deterministic, than you’re also deterministic. As you say, compatibilism is central to making this not incoherent, presumably no decision theory is relevant if there are no decisions to be made.
I think a key idea in compatibilism is that decisions are not made at a particular instant in time. If a decision is made on the spot, disconnected from the past, it’s not compatibilism. If a decision is a process that takes place over time, the only way Omega’s oracular powers can work is if the part of the process that causes you to look like a one-boxer can’t be followed by the part of the decision process where you turn on a dime and open both boxes. But the earlier part of the process causes the later, not the other way around.