minimax said:peripheral vision as a justification for a widescreen computerscreen is plain nonsense. You have data on your screen. When you start editing/ using a certain part of it you're focus will move towards it. You are really confusing a television screen with a computer screen. On a television screen peripheral vision counts, but on a computerscreen it's about how you arrange your data on the screen and for by far the most applications it's the 4:5 ration that let's you use the screen in the most efficient fashion. I'm not only talking about text-based content.
I disagree! Here's 2 examples:
1) For 6 1/2 hours every Mon-Fri I run a stock portfolio streaming app that updates several times a second. A 30x30 (approx) grid displays the stock info and color changes indicate items that require attention (or are approaching predefined triggers). It looks like a video game. This app occupies one side of a 20" iMac display. Variously, I am concentrating on stacked browser, text, mail, etc windows on the other half of the display. While I am working (browsing, etc.) I can monitor the video game out of the corner of my eye. When the stocks need attention, I change my focus to the video game and do what's necessary.
2) I don't run OS X Server in production, but if I did, it would be very useful to fill the display with multiple monitor windows that graphically display the status of the various components-- analogous to the displays on the dashboard of a car or airplane. You don't focus on anything, just glance around and lock in when something grabs your attention.
The ability to run the Stock Portfolio app this way more than paid for all my Mac hardware.