A bit of a digression here.
I love that people think the idea that letting employees spend a measly 20% of their time deciding what they should be working on is somehow an extreme idea. What portion of your typical day would you honestly say is devoted to solid, in-the-flow work? After all the meeting, context switches, random interruptions, lunch, distractions on company chat -- I personally would say a fraction. Or flow state is simply dead for me at the office.
Recently, my roommate and I came home after work and ended up knocking out a very useful skunkworks project in about 6 hours over the course of 2 nights. That completely uninterrupted time mixed with the fact that it was a project that was freshly conceived and still full of passion in our minds let us get more work done in that burst than we felt like we had in weeks.
20% time is a joke. We need to ditch this 40 hour, strictly scheduled workweek in distracting office environments and try some radically different ways of getting productivity boosts. It just so happens that people also feel a lot better when they get these boosts to boot. I know after knocking out that project certainly made me feel awesome.