Someone asked today "how can you hack at work, and then come home and hack some more? I would get tired of it". Now I feel unmotivated - it is like trying not to think of a rhinoceros, I think. Actually sometimes work is "hacking", and sometimes it is "answering email", and the same is also true of not-work, so all I have to do is pick an activity that did not occur in abundance at work. Sometimes both occur in abundance, and then when I come home I fall back on "testing", which really means playing games (choose your projects wisely).