It’s different because the problems it talks about aren’t determined by what decision is made in the end, but by the state of mind of the person making the decision (in a particular and perhaps quite limited way).
You could probably show that a mixed-strategy-aware problem could make the proposed theory fail in a similar way to how causal decision theory fails (i.e. is reflectively inconsistent) on Newcomb’s problem. But it might be easy to extend TDT in the same way to resolve that.
I’m curious as to what extend is Timeless Decision Theory compared to this proposal: by Arntzenius http://uspfiloanalitica.googlegroups.com/web/No+regrets+%28Arntzenius%29.pdf?gda=0NZxMVIAAABcaixQLRmTdJ3- x5P8Pt_4Hkp7WOGi_UK-R218IYNjsD-841aBU4P0EA-DnPgAJsNWGgOFCWv8fj8kNZ7_xJRIVeLt2muIgCMmECKmxvZ2j4IeqPHHCwbz-gobneSjMyE
It’s different because the problems it talks about aren’t determined by what decision is made in the end, but by the state of mind of the person making the decision (in a particular and perhaps quite limited way).
You could probably show that a mixed-strategy-aware problem could make the proposed theory fail in a similar way to how causal decision theory fails (i.e. is reflectively inconsistent) on Newcomb’s problem. But it might be easy to extend TDT in the same way to resolve that.