The article freely admits that you can easily fill more time with more tasks and do more work. But that's not the point. The point is to have clear business goa

The article freely admits that you can easily fill more time with more tasks and do more work. But that's not the point. The point is to have clear business goals, work to accomplish them, be satisfied when done, and stop working. I imagine for most hacker types, that is generally not acceptable. However, personal development bloggers that rehash old ideas from Zen Habits is not very challenging work.