It seems to be generally easier for the human brain to look in another physical place for some information than to "overlay" them on top of each other (as happe

It seems to be generally easier for the human brain to look in another physical place for some information than to "overlay" them on top of each other (as happens when you alt-tab between two fullscreen windows). This is both noticed anecdotally by a lot of people (the majority, if the prevalence of multi-monitor setups are anything to go by) and you can also derive this from the facts that people put more than one thing on their single monitor at a time, and prefer larger screens. You've probably either gotten in the habit of using a single screen, or your brain hardware behaves in a way that most peoples' doesn't. I don't think that your preferences are actually reflective of an objective increase in efficiency, or comfort for the majority of computer users.