Hmm. It does capture most of the essence of TDT, doesn’t it? See for example the last paragraph of chapter 12 and the last two paragraphs of chapter 13.3 in the TDT paper. I disagree with the “just” in the grandparent, but given e.g. “mostly”? Maybe I’m reading too much into the one-sentence description, though.
Hmm. It does capture most of the essence of TDT, doesn’t it?
No. Most of the interesting applications of TDT are about producing the same (or complimentary) outputs with different input. Moreover that description doesn’t even imply making a correct decision on Newcomblike problems (the motivation for producing TDT in the first place). In fact, CDT augmented by the assumption that two copies of the same algorithm with the same input will always yield the same result yields CDT.
To get closer to an (oversimplified) ‘essence’ of TDT I’d instead suggest building from the title. CDT augmented by not caring about which point on the time dimension you are in.
TDT just augments CDT by saying that running two copies of the same algorithm with the same input will always yield the same result.
What? No it doesn’t. That’s not remotely what TDT says. That isn’t even a claim with particularly relevance to decision theory.
Hmm. It does capture most of the essence of TDT, doesn’t it? See for example the last paragraph of chapter 12 and the last two paragraphs of chapter 13.3 in the TDT paper. I disagree with the “just” in the grandparent, but given e.g. “mostly”? Maybe I’m reading too much into the one-sentence description, though.
No. Most of the interesting applications of TDT are about producing the same (or complimentary) outputs with different input. Moreover that description doesn’t even imply making a correct decision on Newcomblike problems (the motivation for producing TDT in the first place). In fact, CDT augmented by the assumption that two copies of the same algorithm with the same input will always yield the same result yields CDT.
To get closer to an (oversimplified) ‘essence’ of TDT I’d instead suggest building from the title. CDT augmented by not caring about which point on the time dimension you are in.