the source coordinate

coordinate.md

@@ -4,7 +4,7 @@
   2. each word is necessary in order to effect the desired outcome
   3. what is done, is doable, because someone thought about how to do it
   4. because the object was thoughtfully described in writing, it could act
-  5. no matter how complex the action, we could understand it, if we could read all the writing
+  5. no matter how complex the action, we can understand it, if we can read all the source
   6. our example begins with an action that is successfully programmed
   7. in describing its pieces from beginning to execution, we learn what we need to know to understand the oucome