&gt;&gt; but as a team or class our overall efficiency drops by being different.<p>Wait, what? How does this follow? In my whole professional career I don&#x27;t think I&#x27;ve ever sat down at another persons machine, so I don&#x27;t see how Bob using vim&#x2F;querty and me using emacs&#x2F;dvorak could possibly impact our aggregate performance as a team.<p>Do teams really spend a chunk of time fiddling around on each other&#x27;s computers?