Good points. It's worth remembering that when it comes to this stuff, we're all anecdotalizing in the dark. I say that because it sounds like we've had quite di

Good points. It's worth remembering that when it comes to this stuff, we're all anecdotalizing in the dark. I say that because it sounds like we've had quite different experiences. (20% of programmers work on side projects sounds low to you, very high to me.) Frankly, I'm not even sure it's possible to properly define these terms, let alone measure them.