Article> Obviously, things like commuting are not recoverable but certainly I can scale back my random articles, Facebook and television watching.

Commuting time is not obviously unrecoverable. You could move closer to work. Doesn't work in all cases, and doesn't happen overnight, but if you're interested in tightly managing your total time on earth, and you're commuting more than 30 minutes a day, you've got to look at that wedge of time as in play.

(Someone could argue that the 30 should be 20, or even 15. Fair enough.)