From: Matt Whitlock <bip@mattwhitlock.name>
To: Tom Harding <tomh@thinlink.com>
Date: Wed, 23 Apr 2014 00:03:17 -0400
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References: <20140422213128.GB2578@savin> <53574581.3040004@thinlink.com>
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Cc: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] Double-spending unconfirmed transactions
	is a lot easier than most people realise
Precedence: list

On Tuesday, 22 April 2014, at 8:45 pm, Tom Harding wrote:
> A network where transaction submitters consider their (final) 
> transactions to be unchangeable the moment they are transmitted, and 
> where the network's goal is to confirm only transactions all of whose 
> UTXO's have not yet been seen in a final transaction's input, has a 
> chance to be such a network.

Respectfully, this is not the goal of miners. The goal of miners is to maximize profits. Always will be. If they can do that by enabling replace-by-fee (and they can), then they will. Altruism does not factor into business.