[EM] Majority Judgment avoids Arrow's Theorem (paradox)

fdpk69p6uq at snkmail.com fdpk69p6uq at snkmail.com
Mon Jun 5 16:22:07 PDT 2017


Arrow's theorem only applies to ranked systems, while MJ is a rated system
(as are Score/Range, SRV/STAR, Approval, etc.)  Later in life, Arrow
supported rated systems:  https://electology.org/
podcasts/2012-10-06_kenneth_arrow

Gibbard's theorem is supposed to apply to all conceivable voting systems,
though.

On Mon, Jun 5, 2017 at 5:48 PM, steve bosworth stevebosworth-at-hotmail.com
|electorama electowiki/Example Allow| <9zz1sjkwvt at sneakemail.com> wrote:

> Is it not still true that one of the great virtues of MJ is that it avoids
> Arrow's paradox?
>
>
> ------------------------------
> *From:* Election-Methods <election-methods-bounces at lists.electorama.com>
> on behalf of election-methods-request at lists.electorama.com <
> election-methods-request at lists.electorama.com>
> *Sent:* Wednesday, May 31, 2017 7:03 PM
> *To:* election-methods at lists.electorama.com
> *Subject:* Election-Methods Digest, Vol 155, Issue 21
>
>
>    1. Corollary to Arrow's Theorem (Rob Lanphier)
>    2. Re: Corollary to Arrow's Theorem (Juho Laatu)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 31 May 2017 08:50:52 -0700
> From: Rob Lanphier <robla at robla.net>
> To: election-methods at lists.electorama.com
> Subject: [EM] Corollary to Arrow's Theorem
> Message-ID:
>         <CAK9hOYm7sdQsneGyZVhNueBdetJpP-oWWM0_jnQEJ2kck8kD9Q at mail.gm
> ail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi all,
>
> It appears that Randall Monroe has discovered an important corollary to
> Arrow's Theorem.  It takes some patience to sort through it, but you'll
> find it described in this paper:
> <https://xkcd.com/1844/>
>
>
> Something to think about.
>
> Rob------------------------------
>
> End of Election-Methods Digest, Vol 155, Issue 21
> *************************************************
>
> ----
> Election-Methods mailing list - see http://electorama.com/em for list info
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.electorama.com/pipermail/election-methods-electorama.com/attachments/20170605/078d44a5/attachment.htm>


More information about the Election-Methods mailing list