Don’t Make Things Worse: If a decision would definitely make things worse, then taking that decision is not rational.
Don’t Commit to a Policy That In the Future Will Sometimes Make Things Worse: It is not rational to commit to a policy that, in the future, will sometimes output decisions that definitely make things worse.
...
One could argue that R_CDT sympathists don’t actually have much stronger intuitions regarding the first principle than the second—i.e. that their intuitions aren’t actually very “targeted” on the first one—but I don’t think that would be right. At least, it’s not right in my case.
I would agree that, with these two principles as written, more people would agree with the first. (And certainly believe you that that’s right in your case.)
But I feel like the second doesn’t quite capture what I had in mind regarding the DMTW intuition applied to P_′s.
Consider an alternate version:
If a decision would definitely make things worse, then taking that decision is not good policy.
Or alternatively:
If a decision would definitely make things worse, a rational person would not take that decision.
It seems to me that these two claims are naively intuitive on their face, in roughly the same way that the ”… then taking that decision is not rational.” version is. And it’s only after you’ve considered prisoners’ dilemmas or Newcomb’s paradox, etc. that you realize that good policy (or being a rational agent) actually diverges from what’s rational in the moment.
(But maybe others would disagree on how intuitive these versions are.)
EDIT: And to spell out my argument a bit more: if several alternate formulations of a principle are each intuitively appealing, and it turns out that whether some claim (e.g. R_CDT is true) is consistent with the principle comes down to the precise formulation used, then it’s not quite fair to say that the principle fully endorses the claim and that the claim is not counter-intuitive from the perspective of the original intuition.
Of course, this argument is moot if it’s true that the original DMTW intuition was always about rational in-the-moment action, and never about policies or actors. And maybe that’s the case? But I think it’s a little more ambiguous with the ”… is not good policy” or “a rational person would not...” versions than with the “Don’t commit to a policy...” version.
EDIT2: Does what I’m trying to say make sense? (I felt like I was struggling a bit to express myself in this comment.)
I would agree that, with these two principles as written, more people would agree with the first. (And certainly believe you that that’s right in your case.)
But I feel like the second doesn’t quite capture what I had in mind regarding the DMTW intuition applied to P_′s.
Consider an alternate version:
Or alternatively:
It seems to me that these two claims are naively intuitive on their face, in roughly the same way that the ”… then taking that decision is not rational.” version is. And it’s only after you’ve considered prisoners’ dilemmas or Newcomb’s paradox, etc. that you realize that good policy (or being a rational agent) actually diverges from what’s rational in the moment.
(But maybe others would disagree on how intuitive these versions are.)
EDIT: And to spell out my argument a bit more: if several alternate formulations of a principle are each intuitively appealing, and it turns out that whether some claim (e.g. R_CDT is true) is consistent with the principle comes down to the precise formulation used, then it’s not quite fair to say that the principle fully endorses the claim and that the claim is not counter-intuitive from the perspective of the original intuition.
Of course, this argument is moot if it’s true that the original DMTW intuition was always about rational in-the-moment action, and never about policies or actors. And maybe that’s the case? But I think it’s a little more ambiguous with the ”… is not good policy” or “a rational person would not...” versions than with the “Don’t commit to a policy...” version.
EDIT2: Does what I’m trying to say make sense? (I felt like I was struggling a bit to express myself in this comment.)