Poorly designed buildings.

Ever been travelling, and waiting in an airport?  Most of you have I'm guessing.  This being the 21st century, we all have some sort of mobile device or laptop that we use to entertain ourselves.  But said device runs on a battery that has (quite) a limited life.  So you need to find an outlet to charge it.  But, chances are that the airport you're sitting in was built before 2005.  Sadly, electrical outlets are scarce and widely spaced.  Either that or you have to go sit in a little "charging booth".  This post also covers buildings which are built in 2009 and don't have ethernet wiring in the walls (talking about you DP PAC).  Another example: my math class is in a brand new building, and the classroom is really nice.  It has 2 projector screens!  Right next to each other.  Want to lower just one because there's only one projector?  Too bad.  The switch lowers both.