<p dir="ltr">Approval & Score would probably elect A, if it was clear that C was unlikely to win, & that it was effectively between A & B.</p>
<p dir="ltr">I'm not saying that A is a wrong winner in general. ...only in a rank-balloting election. If you invite people to rank, then you add should honor their rankings.</p>
<p dir="ltr">Michael Ossipoff</p>
<div class="gmail_quote">On Nov 8, 2016 8:28 PM, "C.Benham" <<a href="mailto:cbenham@adam.com.au">cbenham@adam.com.au</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div class="m_-2499740662207192659moz-cite-prefix">On 11/9/2016 8:35 AM, Michael Ossipoff
wrote:<br>
<br>
<blockquote type="cite">
<p dir="ltr">(You wrote) :</p>
<p dir="ltr">And it isn't clear to me that "wv-like strategy" is
even something we should take if it was free.</p>
<p dir="ltr">(endquote)</p>
<p dir="ltr">In Benham, Woodall, ICT, & probably many or
most pairwise-count methods, the CWs has no protection from
burial, or even from innocent, non-strategic truncation.</p>
<p dir="ltr">With wv-like strategy, truncation from one side
can't take victory from the CWs & give it to the
truncators' candidate.</p>
<p dir="ltr">...and plumping by the CWs's voters makes it
impossible for burial to succeed. In fact, the mere threat of
that plumping can deter burial.</p>
</blockquote>
<br>
So to "protect" some candidate that some voters imagine is the
sincere CW (when perhaps there is no sincere CW or some other
candidate <br>
is the sincere CW) you want to have a "defensive truncation"
strategy available<i> inside</i> a method with a very strong
random-fill incentive?<br>
<br>
And you should add (and stress) that it needs plumping by <i>all
</i>of the "CWs voters to make it impossible for burial to
succeed", and not ,say, <br>
merely 93% of them (with the other 7% sincerely fully ranking):<br>
<br>
43: A<br>
03: A>B<br>
44: B>C (sincere may be B or B>A)<br>
10: C<br>
<br>
100 ballots. C>A 54-46, A>B 46-44, B>C 47-10. Top
Ratings A46 > B44 > C10. Approvals: C54 > A46 > B44.<br>
<br>
Here MDDTR (like MDDTA and WV and Margins and MMPO and Jameson's
latest "holy grail") all elect the possibly burying voters'
favourite, B.<br>
<br>
Viewing the ballots from the top, A is the strongest candidate
(and possibly the sincere CW) and viewing the ballots from the
bottom C is the<br>
strongest candidate. And electing B is simply a very bad (and
flagrant) failure of Later-no-Help. And B is both pairwise beaten
and positionally <br>
dominated by A.<br>
<br>
So I can't accept any method that in this scenario elects B.<br>
<br>
Chris Benham<br>
<br>
<br>
<br>
<br>
<br>
</div>
<br>
</div>
</blockquote></div>