Most people don't watch their set from 20 feet away. And position is seldom static -- I tend to stand during football games, for instance, and move closer durin

Most people don't watch their set from 20 feet away. And position is seldom static -- I tend to stand during football games, for instance, and move closer during intense plays or close-call replays. The same thing happens with smartphones, where people pull it in tight to look at fine detail, and a very high DPI allows you to do that with endless zooming/unzooming.