I have my primary display in the center, directly in front of me. Whatever needs my primary focus for my current task goes there... Outlook for email, vscode for code, Terminal for admin, web browser when web browsering, etc.
To my left is for monitoring things, previewing things, and reference. Browser for checking changes to code, logs for monitoring changes to system, documentation for thing I'm working on, etc.
The result avoids the bezel in my direct field of view, avoids strain and RSIs from awkward posture, and, incidentally, kinda degrades gracefully when I'm at home with only one display or traveling with only my laptop's display.
But the second display to my left allows my peripheral vision to monitor things for changes without diverting my focus, and helps me keep documentation or source material for comparison handy without having to switch away from the thing I'm working on.
To my left is for monitoring things, previewing things, and reference. Browser for checking changes to code, logs for monitoring changes to system, documentation for thing I'm working on, etc.
The result avoids the bezel in my direct field of view, avoids strain and RSIs from awkward posture, and, incidentally, kinda degrades gracefully when I'm at home with only one display or traveling with only my laptop's display.
But the second display to my left allows my peripheral vision to monitor things for changes without diverting my focus, and helps me keep documentation or source material for comparison handy without having to switch away from the thing I'm working on.