For a bunch of geeks like us who are interested in ethics and doing the right thing, I'm surprised to see so few mentions of T. M. Scanlon on the EA Forum[1]. Is there any particular reason for this, or is it just the general explanation of Scanlon not being heavily referenced by Toby Ord, Will MaCaskill, or Peter Singer, and therefore is not referenced much by EAs?
Here is the Stanford Encyclopedia of Philosophy article on contractualism, in case anyone wants to read some more. To be clear, I am no expert on Scanlon. I hadn't even heard of Scanlon and contractualism before reading How to Be Perfect, a playful book about ethics by the creator of the much-loved-by-EAs show The Good Place.
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EDIT: I've decided to track my changing thinking via edits. Here are some of my current best guesses as to contributing factors.
Factor 1: This is somewhat indicative of a characteristic of EAs: we dabble in ethics just enough to feel justified in our actions using utility and expected value, and then we move forward with a project/task/venture (with vague gestures toward cluelessness and uncertainty).
Factor 2: Scanlon isn't nearly as influential as How to Be Perfect suggests. He doesn't show up on lists of the most influential moral philosophers.
Factor 3: EAs want something that feels more objective/rigorous than the fuzzy "reasonableness" that forms a core of Scanlon's ideas.
Factor 4: Scanlon's ideas don't provide much in regards to what we should do, and instead focus on what actions we should avoid.
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Actually, outside of the forum also. I haven't heard anyone mention T. M. Scanlon or contractualism at all.
I don't get the impression that EAs are particularly motivated by morality. Rather, they are motivated to produce things they see as good. Some moral theories, like contractualism, see producing a lot of good things (within the bounds of our other moral duties) as morally optional. You're not doing wrong by living a normal decent life. It seems perfectly aligned with EA to hold one of those theories and still personally aim to do as much good as possible.
A moral theory is more important in what it tells you you can't do in pursuit of the good. Generally what is practical to do if you're trying to effectively pursue the good and abiding by the standard moral rules of society (e.g. don't steal money to give to charity) go hand in hand, so I would expect to see less discussion of this on the forum. Where they come apart, it is probably a significant reputational risk to discuss them.
So this depends if you take EA to be more fundamentally interested in theories of beneficence (roughly what ought you do to positively help others) or in theories of axiology (roughly what makes a world better or worse). I’m suspicious of most theories that pull these apart, but importantly Scanlon’s work is really interested in trying to separate the two, and basically ditch the direct relevance of axiology altogether. Certainly he goes beyond telling people what they ought not to do. If EA is fundamentally about beneficence, Scanlon is very relevant, if it’s more about axiology, he’s more or less silent.