Your post comes across as very cynical, and I disagree with it completely. The type of environment someone is in always has an effect on their productivity. In my case this effect is huge. For example, I build software demos for a living (Sales Engineer at a software company), which requires big chunks of uninterrupted time. I cannot find that at work, even with noise-canceling headphones. If I'm at home though, or even a coffee shop, I get in "The Zone" very easily and can stay in it for quite a while before needing a break. This way, I've built demos in one day that would otherwise have taken me over a week.