In 2012, 10% of US hens were cage-free; by 2025, 46% were, thanks in significant part to these campaigns. That’s around 100 million hens spared from cage confinement per year. In decades of animal welfare activism, nothing comes close to the impact of this. There’s obviously an enormous amount more to do, but the sheer scale of the impact here is mind-boggling. For pandemic preparedness and AI, it’s harder to give crisp numerical impact. But, reflecting on the last 10 years: when Doing Good Better came out, these were regarded as very fringe concerns — extremely speculative, or even paranoid. I think it’s clear from the last 6 years that the early concern here was very farsighted. There are now thriving fields of biosecurity, AI safety and AI governance that would be far smaller and more impoverished if it weren’t for that foresight.