[organsnyder]

You're assuming that any "downtime" is completely worthless, however. I find these sorts of small mental breaks to be incredibly useful, increasing the value of my "productive" time.

Of course, my time is worth an order of magnitude less than $500/hr, so maybe I just don't understand.

[jasonswett]

I've never really considered pumping gas to be downtime. It takes long enough to be annoying but not long enough to start thinking about anything meaningful.