Subject: Re: [Bitcoin-development] User vote in blocksize through fees

From: Aaron Gustafson <[email-masked]>
Date: Fri, 12 Jun 2015 11:56:34 -0700

For the purposes of finding the median, halve < same < double. It will only
change if a majority of non-apathetic votes are for halve or a majority of
non-apathetic votes are for double.

On Fri, Jun 12, 2015 at 11:54 AM, Matt Whitlock <[email-masked]>
wrote:

> On Friday, 12 June 2015, at 7:44 pm, Peter Todd wrote:
> > On Fri, Jun 12, 2015 at 02:36:31PM -0400, Matt Whitlock wrote:
> > > On Friday, 12 June 2015, at 7:34 pm, Peter Todd wrote:
> > > > On Fri, Jun 12, 2015 at 02:22:36PM -0400, Matt Whitlock wrote:
> > > > > Why should miners only be able to vote for "double the limit" or
> "halve" the limit? If you're going to use bits, I think you need to use two
> bits:
> > > > >
> > > > >         0 0 = no preference ("wildcard" vote)
> > > > >         0 1 = vote for the limit to remain the same
> > > > >         1 0 = vote for the limit to be halved
> > > > >         1 1 = vote for the limit to be doubled
> > > > >
> > > > > User transactions would follow the same usage. In particular, a
> user vote of "0 0" (no preference) could be included in a block casting any
> vote, but a block voting "0 0" (no preference) could only contain
> transactions voting "0 0" as well.
> > > >
> > > > Sounds like a good encoding to me. Taking the median of the three
> > > > options, and throwing away "don't care" votes entirely, makes sense.
> > >
> > > I hope you mean the *plurality* of the three options after throwing
> away the "don't cares," not the *median*.
> >
> > Median ensures that voting "no change" is meaningful. If "double" + "no
> > change" = 66%-1, you'd expect the result to be "no change", not "halve""
> > With a plurality vote you'd end up with a halving that was supported by
> > a minority.
>
> Never mind. I think I've figured out what you're getting at, and you're
> right. We wouldn't want "halve" to win on a plurality just because the
> remaining majority of the vote was split between double and
> remain-the-same. Good catch. :)
>
>
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-- 
J. Aaron Gustafson
Cornell University '16 | Computer Science, Engineering | Mathematics, Arts
& Sciences
Vice President, Kappa Delta Rho
[email-masked] | Ithaca, New York