thomblake comments on Survey Results - Less Wrong

48 Post author: Yvain 12 May 2009 10:09PM

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Comment author: thomblake 13 May 2009 02:37:58PM 1 point [-]

Consequentialism and deontology don't really 'mix' well. Either the consequences ultimately matter, or the rules ultimately matter. So it's either 'consequentialism' that collapses into deontology, or 'deontology' that collapses into consequentialism, or some inconsistent mix, or a distinct theory altogether.

Comment author: conchis 13 May 2009 02:59:44PM 2 points [-]

Consequentialism and deontology don't really 'mix' well.

What's wrong with maximize [insert consequentialist objective function here] subject to the constraints [insert deontological prohibitions here]?

Comment author: thomblake 13 May 2009 03:13:03PM 0 points [-]

Then there are further questions:

  1. why maximize that? , and

  2. why use those constraints?

Note that both of these are ethical questions. The way you answer one might have implications for the answer to the other.

Comment author: MichaelBishop 13 May 2009 07:33:04PM 0 points [-]

Can't both of these questions be asked of pure consequentialists?

Comment author: thomblake 13 May 2009 08:30:23PM 0 points [-]

Sure, but the point is that one concern will probably collapse into the other. For a pure consequentialist, question 2 is either irrelevant or answered by question 1, and for question 1 you will end up in a bit of a circle where "because it maximizes overall net utility" is the only possible answer, with maybe an "obviously" down the line.

Comment author: conchis 14 May 2009 11:36:06PM *  0 points [-]

For a pure consequentialist...

Well, yes. But we're not talking about pure consequentialists. It's obvious that hybrid deontology-consequentialism is inconsistent with pure consequentialism; it's also beside the point.

Deontological constraints are seldom sufficient to determine right action. When they're not it seems perfectly natural to try to fill the neither-prohibited-nor-obligatory middle ground with something that looks pretty much like consequentialism.