I don’t think anyone has claimed that “there’s a large funding gap at cost-per-life-saved numbers close to the current GiveWell estimates”, if “large” means $50B. GiveWell seem to think that their present top charities’ funding gaps are in the tens of millions.
I don’t think anyone has claimed that “there’s a large funding gap at cost-per-life-saved numbers close to the current GiveWell estimates”, if “large” means $50B. GiveWell seem to think that their present top charities’ funding gaps are in the tens of millions.