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Sender: Mike Hearn <mh.in.england@gmail.com>
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From: Mike Hearn <mike@plan99.net>
In-Reply-To: <l7fpbn$hf6$1@ger.gmane.org>
Date: Sun, 1 Dec 2013 18:19:14 +0100
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To: Andreas Schildbach <andreas@schildbach.de>
Cc: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] Floating fees and SPV clients
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> Both can be combined into adapting the current generic messages ("This
> payment should become spendable shortly" for incoming and "This =
payment
> has not been transmitted yet" for outgoing transactions).=20

What would the new messages say?

We need to get away from the notion of senders attaching fees anyway. =
This is the wrong way around because it=92s the recipient who cares =
about double spending risk, not the sender. That=92s why merchants keep =
running into issues with people attaching zero fees. Of course they =
attach zero fees. They know they aren=92t going to double spend. It=92s =
the merchant who cares about getting the security against that.

The UI for sending money should end up dead simple - no mention of fees =
anywhere, IMO.

The UI for receiving money could be a bit more complicated but even then =
- I think if ordinary people using smartphone wallets are having to =
think about how quickly they want their transaction to confirm and =
adjust fees, etc on the receiving side then we=92re getting dangerously =
close to the usability failure zone.

Unfortunately we lack the protocol pieces to get the right UI here :( =
Someone needs to sit down and figure out what the UI *should* look like, =
in the ideal world, and then work backwards to figure out what needs to =
be done to get us there.

> For outgoing transactions, if it is very clear that they're never =
going
> to be confirmed, I'd like to see a "Revoke" button.

Disagree. There should never be any cases in which a transaction doesn=92t=
 confirm. Period. I know there have been bugs with bitcoinj that could =
cause this in the past, but they were bugs and they got fixed/will get =
fixed.

Settlement failure is just unacceptable and building a UI around the =
possibility will just encourage people to think of it as normal, when it =
should not be so.=

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