When you get a few extra minutes, check out the research Jeff Han has been working on at http://cs.nyu.edu/~jhan/ftirtouch/.  He calls it "Frustrated Total Internal Reflection".  Sounds like a diagnosis to me.  Check out his demos.

You can also see a demo at http://www.ted.com/tedtalks/tedtalksplayer.cfm?key=j_han.