One can’t stack the farmed animal welfare multiplier on top of the ones about giving malaria nets or the one about focusing on developing countries, right? E.g. can’t give chickens malaria nets.
It seems like that one requires ‘starting from scratch’ in some sense. There might be analogies to the human case (e.g. don’t focus on your pampered pets), but they still need to be argued.
So I think the final number should be lower. (It’s still quite high, of course!)
The way I framed it was unclear, but the final number is correct because I was comparing the QALYs/​$ of farmed animal interventions to that of malaria nets. See the footnote:
Assumes 40 chicken QALYs/​$, 1 human QALY/​$100, and that 400 chicken QALY = 1 human QALY due to neuron differences. Ana’s moral circle includes all beings weighted by neuron count, but she hadn’t thought about this enough.
I was directly comparing the following rough estimates
40 chicken QALY/​$ generated by broiler and cage-free interventions (Rethink Priorities has a mean of 41)
0.01 human QALY/​$ generated by malaria nets from AMF based on GiveWell data (life expectancy ~60 years divided by $6000/​life saved)
400 chicken QALY ~= 1 human QALY if we weight by neurons. Humans have about 86 billion neurons, the red junglefowl (ancestor of chickens) has 221 million, which is a ratio of 389.
40 /​ (0.01 * 400) gives you a multiplier of 10.
One can’t stack the farmed animal welfare multiplier on top of the ones about giving malaria nets or the one about focusing on developing countries, right? E.g. can’t give chickens malaria nets.
It seems like that one requires ‘starting from scratch’ in some sense. There might be analogies to the human case (e.g. don’t focus on your pampered pets), but they still need to be argued.
So I think the final number should be lower. (It’s still quite high, of course!)
The way I framed it was unclear, but the final number is correct because I was comparing the QALYs/​$ of farmed animal interventions to that of malaria nets. See the footnote:
I was directly comparing the following rough estimates
40 chicken QALY/​$ generated by broiler and cage-free interventions (Rethink Priorities has a mean of 41)
0.01 human QALY/​$ generated by malaria nets from AMF based on GiveWell data (life expectancy ~60 years divided by $6000/​life saved)
400 chicken QALY ~= 1 human QALY if we weight by neurons. Humans have about 86 billion neurons, the red junglefowl (ancestor of chickens) has 221 million, which is a ratio of 389.
40 /​ (0.01 * 400) gives you a multiplier of 10.