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+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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+Cc: bitcoin-development@lists.sourceforge.net

+Subject: Re: [Bitcoin-development] Double-spending unconfirmed transactions

+ is a lot easier than most people realise

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+

+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.

+

+