Paul--
 
    I won't try to give a theoretical explanation, but I can
    testify to the fact that I personally at the moment "need my
    eyes testing."
 
    Which is to say, I am currently in charge of testing many of
    our incoming freshman to ascertain the level of their writing
    competence, and when I am doing that testing, I need my eyes!
 
    Norman Carlson
    Western Michigan University