More refinement

lectures/lecture2/lecturenotes.tex

@@ -25,7 +25,12 @@
     \2 Anyone didn't figure out homework?
     \2 Pull changes from my graded version back into your repo
 
-\1 Evaluate as you go along: it's part of design
+\1 Today's lecture
+    \2 When do you evaluate?
+    \2 How do you get started?
+    \2 Goals of the book / couse
+
+\1 \textit{When?} Evaluate as you go along: it's part of design
     \2 We should always be solving some problem
     \2 Very often that means doing early evaluation to precisely identify one
     \2 Start with two questions:
@@ -72,7 +77,6 @@
     \2 \textit{How do you compare them}
     \2 \textit{Convince me each system is better}
 
-
 \1 \textbf{For next time}
     \2 Read Chapter 1 and Chapter 2 to the end of 2.1
     \2 HW\#2 now up, you have one week