Actually what I can read in the article is that they have in common to work long hours. The very first example about Darwin already mentions that he gets 3x 1.

Actually what I can read in the article is that they have in common to work long hours. The very first example about Darwin already mentions that he gets 3x 1.5h stretches of dedicated work in, every f'n day. That's way more what the common 80h/week employee gets in with all the meetings, cross-office talk, and water-cooler waits. Even if you don't consider that "every day" probably also includes weekends. Famous scientists apparently didn't just work a lot, they worked very efficiently to achieve something like that.