tldr. I'm basing my below comment on the title of the article. I think it's just an out growth of our evolution. I mean throughout human history we've had to b

tldr. I'm basing my below comment on the title of the article. I think it's just an out growth of our evolution. I mean throughout human history we've had to be 'busy' to survive. Now there is a small historical ripple in that pattern where we empirically don't have to adhere to the same ethic to survive, but it's still ingrained into us from our history.