I only have an anecdote, but: I&#x27;ve discovered that I have no ability to differentiate between icons while working.  On my own computers, I use WMII, a minimalist tiling window manager; that is: text and no icons.  Before that, I&#x27;d used &quot;traditional&quot; window managers that showed the icon and program name in the bottom bar (Gnome, Vista, XP, 95).  Anyway, at my last job, IT decided that the computer on my desk should run Windows 7, which only has the icon in the bottom bar.  It was totally unusable to me; if I was working on something and wanted to switch windows, my brain would never know which one to click; more often then not, I&#x27;d just try clicking on each of them until I got the window I wanted.