Book 2 was Catastrophe Ethics by Travis Rieder.
If my actions can’t change anything – for good or ill – do have any responsibility to act? The author introduces readers to the ‘spectrum of shouldiness’. Challenging, in the best possible way.
Review: https://app.thestorygraph.com/reviews/b3dfc159-f064-4c79-9fd2-0766759c4e03