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Arriving slightly late to the discussion, apologies.

Personally I wouldn't have written that patch, but I know development of
hostile patches happens out of sight, and if it can be written, we have
to presume it will be written eventually. I'd have preferred a patch
that only replaced non-final txes, which is the use-case I have for
transaction replacement, but that's easy to add back in.

I'm certainly not terribly convinced of the security of vanilla
zero-confirmation transactions myself, for reasons including but not
limited to this case. I also think it's important to understand that
people do make irrational decisions, and trusting network security on
everyone behaving perfectly rationally is not a workable model either.

TLDR; me too

Ross

On 12/02/15 20:36, Allen Piscitello wrote:
> You keep making moral judgements.  Reality is, if you live in a world with
> arsonists, you need to have a building that won't catch on fire, or has
> fire extinguishers in place.  Do not depend on arsonists ignoring you
> forever as your security model.  Penetration testing to know what
> weaknesses exist, what limitations exist, and what can be improved is
> essential.  Keeping your head in the sand and hoping people choose to do
> the right thing only ends one way.
>
> On Thu, Feb 12, 2015 at 1:52 PM, Justus Ranvier <justusranvier@riseup.net>
> wrote:
>
> On 02/12/2015 07:47 PM, Allen Piscitello wrote:
> >>> Nothing will stop that.  Bitcoin needs to deal with those issues,
> >>> not stick our heads in the sand and pretend they don't exist out of
> >>> benevolence. This isn't a pet solution, but the rules of the
> >>> protocol and what is realistically possible given the nature of
> >>> distributed consensus.  Relying on altruism is a recipe for
> >>> failure.
>
> If there's a risk of fire burning down wooden buildings, pass out fire
> extinguishers and smoke detectors, not matches.
>
> The latter makes one an arsonist.
>
>>
>>
>>
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