Oh you mean like an  oar out of the water? or not being able to see the forest in front of his nose  Gee I can't imagine why!   
and yes.. people read less.  and when they do read, its fiction, or demi fiction.  and very few us (yeah, me included) read a lot of math --(well no, acutally i do read a fair amount of math, I just don't always understand it.) or science or economics or any technical subject.  especially out of our field.  
Field? people have fields?  Oh, please can i have one?  i have always wanted to graze sheep-- (faldage can have his part (ugh!) if he wants it..) I want the wool!  
some idioms live on.. and their origins are lost..  and they are easy to mangle -- other are like sleeping dogs--their barks are worse than their bites.
the trick is to be pleasantly peevish--  no sense in making your self unhappy because the world is inhabitted by idiots.  (or as i say eejits!)