Peterdjones comments on Less Wrong Rationality and Mainstream Philosophy - Less Wrong
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Interestingly, that sounds a lot like (an important part of) how linguistics research works. Of course, it's a problem for philosophy because it doesn't see itself as a cognitive science like linguistics does, and it endeavours to do other things with this approach than deducing the rules of the system that generates the intuitions.
Such as?
Such as, in this ancient example, understanding 'the nature of justice', as if that were some objective phenomenon.
I'm not up to date on philosophy since covering the drop-dead basics in high school seven years ago, so ignore this if modern philosophy has explicitly reduced itself to the cognitive science of understanding the mental machinery that underlies our intuitions. From what snippets I hear, though, I don't get that impression.
I don't know what example you are referring to, or what you mean by "some objective phenomenon". Justice clearly isn't something you can measure in the laboratory. It is not clearly subjective either, since people are either imprisoned or not, they can be inprisoned-for-me but free-for-you. Philosophical questions often fall into such a grey area. Socratic discussions assume that people intersubjectviely have the same concept in mind, or are capable of converging on an improved definition intersubjectively. Neither assumption is unreasonable.
I'm quoting the essay.
Justice is subjective, after a fashion. It is a set of intuitions, systematised into commonly accepted laws, which can change over time. Whether people are in jail isn't part of the phenomenon 'justice', only of how people act on these subjective ideas. On the other hand, people can be rightly-imprisoned-for-me and undeservedly-imprisoned-for-you if we disagree about the law.
An intersubjective fashion. It's not one person's preference. If justice were objective, Socrates should have tested it in the laboratory instead of discussing it. If it were subjective, he needn't have invited his friends over--he didn't need them to tell him who makes his favourite restina. Justice can only be intersubjective because it regulates interactions among people, and the appropirate way to decide intersubjective issues is to solicit a range of opinion from a number of people and iron out the bumps. I don't see anything broken in what Socrates was doing. We still do it, in the forms of ethics committees, think tanks and panel discussions.
I can't see what distinction you are drawing. If there is s a phenomenon of justice, it is an intersubjective way of combining preferences that fulfils certain criteria, such as being the same for all, in order to regulate certain concrete events, such as who lands in jail. So who lands in jail is in fact part of the intersubjective idea.
I don't see why. If I think 2+2=5, then "2+2=5" isn't true-for-me, it is just wrong. Disagreement is not a sufficient condition for something's being properly subjective.