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One reason I'm excited about work on lead exposure is that it hits a sweet spot of meaningfully benefiting both humans and nonhumans. Lead has dramatic and detrimental effects for not just mammals, but basically all animals, from birds to aquatic animals to insects.

Are there other interventions that potentially likewise hit this sweet spot?

Someone+anonymous I think) recently suggested family planning at this intersection as well, because less humans = less animal suffering too. I did however think as a counterpoint this could be offset by the accelerated development associated with family planning could mean quicker transitions to factory farming too, bit that's just conjecture.

On this note any interventions that speed development could potentially be in the "negative" , anti sweet spot here too as developing country = more meat eaten = more factory farming.

Perhaps the soaking beans thing could also own slightly in this direction, someone suggested if coming beans were cheaper it could push further against eating meat, and also prevent deforestation which could either increase our reduce wild animal suffering - increase animal suffering by reducing habitat, or reduce it as less weeks animals can survive in the deforested area

Wow it's complicated

It’s noteworthy that if the procreation asymmetry is rejected, the sign of family planning interventions is the opposite of the sign of lifesaving interventions like AMF. Thus, those who support AMF might not support family planning interventions, and vice versa.

I admire you for repeatedly pushing a point that is so ideologically awkward for people, but that's not quite right. Sometimes family planning just changes when people have kids, rather than how many. In those cases, the other gains from it are good on all sensible views, and there's no objection based on "creating happy people is good". 

I appreciate that, and I agree with you!

However, as far as I'm aware, EA-recommended family planning interventions do decrease the amount of children people have. If these charities benefit farmed animals (and I believe they do), decreasing the human population is where these charities' benefits for farmed animals come from.

I've estimated that both MHI and FEM prevent on the order of 100 pregnancies for each maternal life they save. Unless my estimates are way too high (please let me know if they're wrong; I'm happy to update!), even if only a very small percentage of these pregnancies would have resulted in counterfactual births, both of these charities would still on net decrease the amount of children people have.

To the extent that they change timing rather than total number, the benefits (e.g. reduced maternal mortality) are probably overstated also, because you some of the maternal deaths you thought you prevents were actually just delayed.

Despite this I think Ariel is correct and these interventions are reducing the number.

Big picture wise isn't this making a normative judgement? Assuming a carrying capacity of earth for total biomass, less humans means more animal lives who are unable to record or communicate their experiences. We don't know what animals experience pre language but it's possible they are unable to reliably encode their experiences without the structure of a human language. (Similar to how humans have little memory from early childhood)

I am not sure it's a fair normative judgement to conclude this is an improvement.

Take it to the limit. All of humanity has died off except a small 100 person tribe. Nature has reclaimed everything else. Is this a net better world?

That biomass assumption has fallout if it's correct. For example blocking housing expansion for more wolf habitat might be the same tradeoff. Are the qalys of wolves better than the humans who might live there?

I think the biomass assumption does have a flaw: when we generate artificial fertilizer from fossil fuel and feed humans and pets with the agricultural products we are in disequilibrium, we can only do this for a finite amount of time before we can't.

I’m a huge fan of lead elimination too! And I could imagine that, for instance, cleaning up soil from battery recycling or mining could benefit some animals.

But just wanted to note that some of the most promising interventions to protect humans (eg getting lead out of spices, paint, cookware, cosmetics, toys, water pipes, etc) might not have much effect on nonhuman animals.

EA NYC is soliciting applications for Board Members! We especially welcome applications submitted by Sunday, September 24, 2023, but rolling applications will also be considered. This is a volunteer position, but crucial in both shaping the strategy of EA NYC and ensuring our sustainability and compliance as an organization. If you have questions, Jacob Eliosoff is the primary point of contact. I think this is a great opportunity for deepened involvement and impact for a range of backgrounds!

I often see people talking past each other when discussing x-risks because the definition[1] covers outcomes that are distinct in some worldviews. For some, humanity failing to reach its full potential and humanity going extinct are joint concerns, but for others they are separate outcomes. Is there a good solution to this?

  1. ^

    "An existential risk is one that threatens the premature extinction of Earth-originating intelligent life or the permanent and drastic destruction of its potential for desirable future development." (source)

I propose "positive and negative longtermism", so something to do with reaching full potential would all be positive longtermism and mere extinction protection is negative longtermism.