It still doesn’t seem like defining a “fair” class of problems is that useful”—discovering one class of fair problems lead to CDT. Another lead to TDT. This theoretical work is seperate from the problem of producing pragmatic algorithms that deal with unfairness, but both approaches produce insights.
“This meta decision theory would itself be a decision theory that does well on both types of problems so such a decision theory ought to exist”—I currently have a draft post that does allow some kinds of rewards based on algorithm internals to be considered fair and which basically does the whole meta-decision theory thing (that section of the draft post was written a few hours after I asked this question which is why my views in it are slightly different).
It still doesn’t seem like defining a “fair” class of problems is that useful”—discovering one class of fair problems lead to CDT. Another lead to TDT. This theoretical work is seperate from the problem of producing pragmatic algorithms that deal with unfairness, but both approaches produce insights.
“This meta decision theory would itself be a decision theory that does well on both types of problems so such a decision theory ought to exist”—I currently have a draft post that does allow some kinds of rewards based on algorithm internals to be considered fair and which basically does the whole meta-decision theory thing (that section of the draft post was written a few hours after I asked this question which is why my views in it are slightly different).