[Enigmail] Expect signature header proposal

[Robert J. Hansen]

Phil Stracchino wrote:
> I'll go further than that.

To an extent, I agree with Phil -- but only to an extent.

We need to separate two kinds of stupidity: the stupidity that's born of
a momentary braino, and the stupidity that comes from laziness.

Take Eitan's "problem" as an example.  There is a simple, obviously
correct way to handle this: train yourself better.  I agree with Phil
that due diligence cannot be maintained when it is a matter of conscious
concentration; but training yourself to do it, getting into the habit of
it, will make it fairly easy to "follow the checklist" even without
thinking about it.

There is no quick technological fix.  There is an effective
human-factors fix.  But insisting on "well, I'm going to continue
searching for a technological fix to a human problem!" is -- exactly as
Phil said -- counterproductive.

On the other hand, consider what would happen if the "Sign" and "Revoke"
buttons were right next to each other in the key manager.  People would
inevitably click the wrong one by accident, just in the course of daily
business.  It would be a momentary braino, not paying too much attention
to where your mouse pointer is.  It's not laziness so much as simple
human error.  It turns out there's a neat, efficient fix to this: put
more space between the buttons, or rearrange them so a harmless button
was in between the two.

Technology can mitigate the occasional routine human error.  It cannot
mitigate the systemic problem of people who want to remain ignorant and
let the computer do it all for them.

As an example, look at Apple Computer.  OS X does a _fantastic_ job of
mitigating routine human error.  But even on OS X, if you want to remain
ignorant, the computer will not be your friend.