> if you keep diluting substance X with more and more of substance Y, you'll eventually get mostly substance Y. Exactly, that's the paradox. Parfit's argument

> if you keep diluting substance X with more and more of substance Y, you'll eventually get mostly substance Y. Exactly, that's the paradox. Parfit's argument stipulates a series of steps each of which seems to make the world better, but where the end result seems to be worse than what you started with. Hopefully, we can avoid the paradox, and instead grow in such a way that everyone thrives and we mitigate the negative effects on the environment.