I changed specifics to variables because I was interested more in the broader point than the specific case.
Asteroid tracking involved spending ~$100MM to eliminate most of the expected losses from civilization-wrecking asteroids. Generously, it might have eliminated as much as a 10^-6 extinction risk (if we had found a dinosaur-killer on course our civilization would have mobilized to divert it). At the same tradeoff, getting rid of a 9% extinction risk would seem to be worth $9T or more. Billions are spent on biodefense and nuclear nonproliferation programs each year.
So it seems to me that a 9% figure 'overshoots' the relevant thresholds in other areas: a much lower believed cost per increment of existential risk reduction would seem to suffice for more-than-adequate support (e.g. national governments, large foundations, and plenty of scientific talent would step in before that, based on experiences with nuclear weapons, climate change, cancer research, etc).
For comparison, consider someone who says that she will donate to malaria relief iff there is solidly convincing proof that at least 1000 cases of malaria affecting current people will be averted per dollar in the short-term. This is irrelevant in a world with a Gates Foundation, GiveWell, and so on: she will never get the chance as those with less stringent thresholds act.
I was trying to clarify whether you were using an extreme example to make the point in principle, or were saying that your threshold for action would actually be in that vicinity.
I'm currently working on a research project for MIRI, and I would welcome feedback on my research as I proceed. In this post, I describe the project.
As a part of an effort to steel-man objections to MIRI's mission, MIRI Executive Director Luke Muehlhauser has asked me to develop the following objection:
In Luke's initial email to me, he wrote:
Luke and I brainstormed a list of potential historical examples of people predicting the future 10+ years out, and using the predictions to inform their actions. We came up with the following potential examples, which I've listed in chronological order by approximate year: