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@@ -118,6 +118,17 @@ Reduction Strategies and Normal Forms (in progress);
 
 > We posted [[answers to Week 2's homework|exercises/assignment2_answers]].
 
+(**Week 4**) Thursday 19 February 2015
+
+> Topics: [[!img images/tabletop_roleplaying.png size="240x240" alt="Hey, no recursing"]]
+[[Yes, recursing|topics/week4_fixed_point_combinators]];
+[[More about fixed point combinators|topics/week4_more_about_fixed_point_combinators]];
+Towards types (in progress);
+[[Homework|exercises/assignment4]]
+
+> Now you can read Sections 3.1 and 6.1 of Hankin; and browse the rest of Hankin Chapter 6, which should look somewhat familiar.
+
+
 <!--
 We've added a [[Monad Library]] for OCaml.
 We've posted a [[State Monad Tutorial]].