Moral language today is wreckage from a lost tradition

MacIntyre opens with a thought experiment: imagine a future in which science has been destroyed and people are left using scientific-sounding words — "neutrino," "mass," "experiment" — without any grasp of the theories that once gave those words precise meaning. He argues our moral vocabulary is in exactly this condition. We say "good," "just," and "duty" as though they refer to something stable, but the framework that once anchored them has been lost.

The result isn't that people are stupid or dishonest when they argue about ethics; it's that they're using the vocabulary of a coherent system while missing the system itself. Two people can both invoke "rights" or "fairness" and mean fundamentally incompatible things, with no shared standard available to adjudicate between them.

This diagnosis reframes the entire modern experience of moral disagreement. It isn't a temporary confusion waiting to be cleared up by better arguments — it's a structural condition. Takeaway: much of what looks like moral disagreement is actually people talking past each other using the debris of a system neither fully possesses.