First version: 2008-03-25. Revised: 2008-03-26 (thanks, Kathi Fisler), 2010-10-21, 2010-11-20, 2012-05-04, 2014-12-16 (thanks, Norman Ramsey), 2016-09-30 (thanks, Behnam Heydarshahi). Some years ago I was talking to a visiting scholar who was a faculty member in a foreign country. I asked her why letters from her country seemed to be so uninformative. She pointed out that there, faculty never read