Indeed, the use of a compact display actively drains our mental capacity. The screen’s small size means that the map we construct of our conceptual terrain has to be held inside our head rather than fully laid out on the screen itself. We must devote some portion of our limited cognitive bandwidth to maintaining that map in mind; what’s more, the mental version of our map may not stay true to the data, becoming inaccurate or distorted over time. Finally, a small screen requires us to engage in virtual navigation through information—scrolling, zooming, clicking—rather than the more intuitive
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