added reading_writing.md

Tasks_of_the_Contingent_Librarian/reading_writing.md

@@ -1,23 +1,20 @@
 # reading/writing
 
-## reading
+## non-machine reading
 
 On the surface of it, a library is a place for reading.
 
+## machine reading
+
 Unix-like systems use three permissions; 
 
 1. *read*
 2. *write*
 3. *execute*
 
-## writing
+## non-machine writing
 
 Writing is a technology, one which structures thought in a linear manner (*see* Flusser). Writing doesn't only involve alphanumeric characters. 
 
-machine reading
-machine writing
-
-human reading
-human writing
+## machine writing
 
-permissions