LNhelp is a double edged sword. If lower ranked votes cannot help your
opponent, they cannot be counted on to help you either. Yet one of the
biggest talking point claims of IRV advocates is that it satisfies Reliable
Later Help: "If your first place choice is eliminated, then your second
place choice will still be there."
This is the Later Help promise that converts voters to Instant Runoff
Voting. In other words, (according to the promise) unlike other voting
methods, IRV makes it safe to always vote your sincere favorite at the top
of your ballot ... you don't have to betray your favorite to keep your
anti-favorite from winning.
One problem with this promise is that it is false; your second place choice
may well be eliminated before your first place choice is eliminated.
The other problem is its disingenuity: it directly contradicts a lesser
(but true) selling point ... namely its satisfaction of Later No Help.
IRV advocates want to have it both ways ... they want to be able to say it
satisfies both Later No Help and Reliable Later Help, which is impossible.
The irony is that voters would rather have Reliable Later Help (the false
claim) than Later No Help (the true claim). That's why their salesmen
double down on Reliable Later Help, but hardly mention Later No Help (which
doesn't even sound that helpful) except in one context: when bashing the
Condorcet Criterion.
The irony on top of irony is that IRV supporters criticize Condorcet
methods for making the correct choice (as much as possible) between Later
No Help and Reliable Later Help.
In summary, Later No Help and Reliable Later Help are incompatible.
Condorcet advocates acknowledge this fact and place themselves 80 percent
of the way between LaterNoHelp and ReliableLaterHelp on the spectrum of
possibilities.
IRV public relations biggest selling point is the false claim that IRV is
at the right extreme of the spectrum (100 percent Reliable Later Help),
while admitting its 100 percent satisfaction of Later No Help, but without
acknowledging this patent contradiction.
Like Monk says, "I might be wrong, but I don't think so."
-Forest
On 02.06.2022 19:35, Forest Simmons wrote:
LNhelp is a double edged sword. If lower ranked votes cannot help your
opponent, they cannot be counted on to help you either. Yet one of the
biggest talking point claims of IRV advocates is that it satisfies
Reliable Later Help: "If your first place choice is eliminated, then
your second place choice will still be there."
LNHarm + LNHelp is just burial immunity. Like Plurality :-)
The FBC is what makes it safe to always vote your sincere favorite
(co-equal) at top... which is more about compromising.
So if the IRV advocates suggest that LNH implies you can vote your
sincere favorite top, then they're doubly wrong!
In another post, Kevin Venzke mentioned that he found some Condorcet
methods to be considerably more susceptible to compromise than others.
My impression was that since some Condorcet methods are almost FBC
compliant, and that it's possible to make them completely FBC compliant
at the cost of losing Condorcet compliance (e.g. Minmax and MMPO),
Condorcet methods as a whole were pretty close to FBC in some sense, in
that they generally aren't susceptible to compromise strategy. James
Green-Armytage's results also suggest this, as the Condorcet methods he
investigated all had relatively low compromise incentive.
But apparently it's not that simple, as Kevin's results indicate!
-km
Kristofer, thanks for the further clarifications!
It just came to me why IRV's claim of FBC compliance is so ironical: strong
FBC is their most vaunted claim and it is false. And though their lesser
claim of Later No Help is true, the truth of the lesser claim is at the
very heart of why the more vaunted claim is false!
On top of that they disparage Condorcet's good faith effort to approach the
humble (non-strong) FBC, because it necessarily increases burial risk, a
necessity that Condorcet advocates humbly acknowledge, but IRV advocates
deny, whether disingenuously or unwittingly.
Let's give the vast majority (but not the most crafty and willful minority)
of them the benefit of a doubt on that score!
-Forest
El jue., 2 de jun. de 2022 11:45 a. m., Kristofer Munsterhjelm <
km_elmet@t-online.de> escribió:
On 02.06.2022 19:35, Forest Simmons wrote:
LNhelp is a double edged sword. If lower ranked votes cannot help your
opponent, they cannot be counted on to help you either. Yet one of the
biggest talking point claims of IRV advocates is that it satisfies
Reliable Later Help: "If your first place choice is eliminated, then
your second place choice will still be there."
LNHarm + LNHelp is just burial immunity. Like Plurality :-)
The FBC is what makes it safe to always vote your sincere favorite
(co-equal) at top... which is more about compromising.
So if the IRV advocates suggest that LNH implies you can vote your
sincere favorite top, then they're doubly wrong!
In another post, Kevin Venzke mentioned that he found some Condorcet
methods to be considerably more susceptible to compromise than others.
My impression was that since some Condorcet methods are almost FBC
compliant, and that it's possible to make them completely FBC compliant
at the cost of losing Condorcet compliance (e.g. Minmax and MMPO),
Condorcet methods as a whole were pretty close to FBC in some sense, in
that they generally aren't susceptible to compromise strategy. James
Green-Armytage's results also suggest this, as the Condorcet methods he
investigated all had relatively low compromise incentive.
But apparently it's not that simple, as Kevin's results indicate!
-km