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Daniel Greco's avatar

Really nice post, though of course I can't help but pick some nits with the taxonomy.

First, I'd dispute that Humean constructivism is all that marginalized in contemporary philosophy. Sharon Street, a pretty prominent contemporary philosopher at NYU, explicitly characterizes her view as Humean Constructivism, which she contrasts with Kantian constructivism. (So it's not as if the only options for the constructivist are Humean, or relativist; Kantian constructivists are no relativists.) While she doesn't emphasize game theory/social equilibria, I do think it could fit pretty neatly into the stuff she *does* say.

I'd also insist that expressivists are missing from the chart, and I think they're significant enough that it's a big gap. While they're intellectual descendants of emotivists, in my view they don't inherit the vulnerabilities you rightly object to here. (They will say that moral claims are true or false, and that's an important part of how they deal with the Frege-Geach problem, though they'll have a distinctive understanding of what they're doing in so saying.) I pick the nits since I'm sympathetic both to expressivism and to the substantive picture you lay out here, and it's not at all clear to me that there's any tension in adopting expressivism as your basic account of what we're doing when we endorse fundamental moral principles, but also endorsing the game theory/social equilibria story as a causal/historical account of *which* fundamental moral principles we find attractive. I don't see any conflict.

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Paul S's avatar
6dEdited

So I think that the best place to go if you are attracted to Humean constructivism is not modern game theory, but in fact, another 18th century source: Adam Smith's Theory of Moral Sentiments.

Hume is the OG, but Smith is the genius in the next generation who works it all out fully and in the most convincing way. For me, the TMS is the single greatest work in the history of moral philosophy. But if you think Hume is unfairly neglected, well...!

There are no real shortcuts into TMS, and it is a challenging book. But my God, it's rewarding. However, if I was to try and convince you, perhaps you could start here? :)

https://www.paulsagar.com/_files/ugd/ec3ee6_daf5b69e4db3401f84b3c14228879856.pdf

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