DALYs do use a more defensible analysis; GiveWell aren’t using DALYs. This has some good and some bad aspects (related to the discussion in this post, although in this case the downside of defensibility is more that it doesn’t let you incorporate considerations that aren’t fully grounded).
The problem with just using DALYs is that on many views they overweigh infant mortality (here’s my view on some of the issues, but the position that they overweigh infant mortality is far from original). With an internal agreement that they significantly overweigh infant mortality, it becomes untenable to just continue using DALYs, even absent a fully rigorous alternative. Hence falling back on more ad hoc but somewhat robust methods like asking people to consider it and using a median.
[I’m just interpreting GW decision-making from publicly available information; this might easily turn out to be a misrepresentation.]
DALYs do use a more defensible analysis; GiveWell aren’t using DALYs. This has some good and some bad aspects (related to the discussion in this post, although in this case the downside of defensibility is more that it doesn’t let you incorporate considerations that aren’t fully grounded).
The problem with just using DALYs is that on many views they overweigh infant mortality (here’s my view on some of the issues, but the position that they overweigh infant mortality is far from original). With an internal agreement that they significantly overweigh infant mortality, it becomes untenable to just continue using DALYs, even absent a fully rigorous alternative. Hence falling back on more ad hoc but somewhat robust methods like asking people to consider it and using a median.
[I’m just interpreting GW decision-making from publicly available information; this might easily turn out to be a misrepresentation.]