Assuming that your audience isn’t familiar with the sequences and proceeds to go read the article, yes, that’s not succinct. But the audience probably already has a cached idea of disagreements being semantic conflicts, so while he’s not literally in a position to get the same idea across in two words, it could probably be compressed down at least as far as
“When I say that I ‘ought’ to do something, I mean that it’s in accordance with my own innate desires and values as a human. My values and desires are real ‘is’ facts about the universe with a physical basis, and so ‘ought’ facts can be neatly derived from ‘is’ facts. This is as useful a definition of ‘ought’ as you’re likely to get, and a definition that divorces normative facts from positive ones, saying that you cannot derive an ‘ought’ from an ‘is’ doesn’t offer any practical advantage.”
Assuming that your audience isn’t familiar with the sequences and proceeds to go read the article, yes, that’s not succinct. But the audience probably already has a cached idea of disagreements being semantic conflicts, so while he’s not literally in a position to get the same idea across in two words, it could probably be compressed down at least as far as
“When I say that I ‘ought’ to do something, I mean that it’s in accordance with my own innate desires and values as a human. My values and desires are real ‘is’ facts about the universe with a physical basis, and so ‘ought’ facts can be neatly derived from ‘is’ facts. This is as useful a definition of ‘ought’ as you’re likely to get, and a definition that divorces normative facts from positive ones, saying that you cannot derive an ‘ought’ from an ‘is’ doesn’t offer any practical advantage.”