Add various doc updates

They are still very far from complete.

docs/nomenclature.md

@@ -2,3 +2,14 @@ We use `Call` and `Result` for our own types that wrap `Request` and
 `Response`.
 
 This hopefully will make things less confusing and avoid problems with shadowing.
+
+## meta
+
+- We use _algorithmic complexity_ for performance discussions, when
+  things like Big-O come up, etc
+
+- We use _conceptual complexity_ for design and architecture
+
+- We use _cognitive load_ when talking about developer experience
+
+- We use _operational burden_ when talking about production reality