Jiro comments on Diseased thinking: dissolving questions about disease - Less Wrong

236 Post author: Yvain 30 May 2010 09:16PM

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Comment author: Jiro 15 November 2013 04:38:39PM *  0 points [-]

In that case, the appropriate X is to perform the action with whatever probability you would wish to be the case. It still fits the CI.

In that case, you can fit anything whatsoever into the categorical imperative by defining an appropriate reference class and action. For instance, I could justify robbery with "How would I like it, if everyone were to execute 'if (person is Jiro) then rob else do nothing'". The categorical imperative ceases to have meaning unless some actions and some reference classes are unacceptable.

Or more briefly, it still fits

That's too brief. Because :"what do most people mean when they say this" actually matters. They clearly don't mean for it to include "if (person is Jiro) then rob else do nothing" as a single action that can be universalized by the rule.

Comment author: [deleted] 16 November 2013 03:00:00AM *  1 point [-]

For instance, I could justify robbery with "How would I like it, if everyone were to execute 'if (person is Jiro) then rob else do nothing'".

The reason that doesn't work is that people who are not Jiro would not like it if everyone were to execute 'if (person is Jiro) then rob else do nothing', so they couldn't justify you robbing that way. The fact that the rule contains a gerrymandered reference class isn't by itself a problem.

Comment author: nshepperd 16 November 2013 03:21:09PM 0 points [-]

Does the categorical imperative require everyone to agree on what they would like or dislike? That seems brittle.

Comment author: [deleted] 16 November 2013 07:30:35PM 0 points [-]

This post discusses the possibility of people “not in moral communion” with us, with the example of a future society of wireheads.

Comment author: Jiro 18 November 2013 06:48:47PM *  -1 points [-]

I've always heard it, the Golden Rule, and other variations to be some form of "would you like it if everyone were to do that?" I've never heard of it as "would everyone like it if everyone were to do that?". I don't know where army1987 is getting the second version from.

Comment author: RichardKennaway 16 November 2013 07:35:28PM 0 points [-]

In that case, you can fit anything whatsoever into the categorical imperative by defining an appropriate reference class and action.

Doing which is reference class tennis, as I said. The solution is to not do that, to not write the bottom line of your argument and then invent whatever dishonest string of reasoning will end there.

The categorical imperative ceases to have meaning unless some actions and some reference classes are unacceptable.

No kidding. And indeed some are not, as you clearly understand, from your ability to make up an example of one. So what's the problem?

Comment author: nshepperd 18 November 2013 09:22:32PM 0 points [-]

What principle determines what actions are unacceptable apart from "they lead to a bottom line I don't like"? That's the problem. Without any prescription for that, the CI fails to constrain your actions, and you're reduced to simply doing whatever you want anyway.

Comment author: TheAncientGeek 19 November 2013 04:41:09PM *  1 point [-]

It's not like the issue has never been noticed or addressed:

"Hypothetical imperatives apply to someone dependent on them having certain ends to the meaning:

if I wish to quench my thirst, I must drink something; if I wish to acquire knowledge, I must learn.

A categorical imperative, on the other hand, denotes an absolute, unconditional requirement that asserts its authority in all circumstances, both required and justified as an end in itself. It is best known in its first formulation:

Act only according to that maxim whereby you can, at the same time, will that it should become a universal law.[1] "--WP

Comment author: RichardKennaway 19 November 2013 04:38:20PM 1 point [-]

This asserts a meta-meta-ethical proposition that you must have explicit principles to prescribe all your actions, without which you are lost in a moral void. Yet observably there are good and decent people in the world who do not reflect on such things much, or at all.

If to begin to think about ethics immediately casts you into a moral void where for lack of yet worked out principles you can no longer discern good from evil, you're doing it wrong.

Comment author: nshepperd 19 November 2013 05:28:24PM 1 point [-]

Look, I have no problem with basing ethics on moral intuitions, and what we actually want. References to right and wrong are after all stored only in our heads.

But in the specific context of a discussion of the Categorical Imperative—which is supposed to be a principle forbidding "categorically" certain decisions—there needs to be some rule explaining what "universalizable" actions are not permitted, for the CI to make meaningful prescriptions. If you simply decide what actions are permitted based on whether you (intuitively) approve of the outcome, then the Imperative is doing no real work whatsoever.

Comment author: TheAncientGeek 19 November 2013 05:33:38PM 3 points [-]

If, like most people, you don't want to be murdered, the CI will tell you not to murder. If you don't want to be robbed, it will tell you not to rob. Etc. It does work for the normal majority, and the abnornmal minority are probably going to be a problem under any system.

Comment author: nshepperd 19 November 2013 05:41:54PM 2 points [-]

Please read the above thread and understand the problem before replying.

But for your benefit, I'll repeat it: explain to me, in step-by-step reasoning, how the categorical imperative forbids me from taking the action "if (I am nshepperd) then rob else do nothing". It certainly seems like it would be very favourable to me if everyone did "if (I am nshepperd) then rob else do nothing".

Comment author: TheAncientGeek 19 November 2013 05:57:42PM 2 points [-]

That's a blatant cheat. How can you have a universal law that includes a specific exception for a named individual?

Comment author: Desrtopa 19 November 2013 07:08:46PM *  2 points [-]

The way nshepperd just described. It is, after all, a universal law, applied in every situation. It just returns different results for a specific individual. We can call a situation-sensitive law like this a piecewise law.

Most people would probably not want to live in a society with a universal law not to steal unless you are a particular person, if they didn't know in advance whether or not the person would be them, so it's a law one is unlikely to support from behind a veil of ignorance.

However, some piecewise laws do better behind veils of ignorance than non-piecewise universal laws. For instance, laws which distinguish our treatment of introverts from extroverts stand to outperform ones which treat both according to the same standard.

You can rescue non piecewise categorical imperatives by raising them to a higher level of abstraction, but in order to keep them from being outperformed by piecewise imperatives, you need levels of abstraction higher than, for example "Don't steal." At a sufficient level of abstraction, categorical imperatives stop being actionable guides, and become something more like descriptions of our fundamental values.

Comment author: TheAncientGeek 19 November 2013 08:38:53PM 2 points [-]

I'm all in favour of going to higher levels of abstraction. Its much better appreach than coding in kittens-are-nice and slugs-are-nasty.

Comment author: Lumifer 19 November 2013 07:54:15PM *  1 point [-]

It is, after all, a universal law, applied in every situation. It just returns different results for a specific individual.

Is there anything that makes it qualitatively different from

if (subject == A) { return X }
elsif (subject==B) { return Y }
elsif (subject==C) { return Z } ... etc. etc.?