It's not the right kind of time, though. Reading and occasionally posting usually don't require sustained concentration -- they can mostly be done as a break from that. (Of course there are times when an interesting and difficult topic shows up, or a debate arises that one wants to participate in.) So for the most part, it's a break from work. Switching from one nontrivial technical task to squeeze bits of a much more difficult task into one's day is much harder.
