From: Chris Barker <barker@kappa.linguistics.fas.nyu.edu>
Date: Sat, 2 Oct 2010 19:23:54 +0000 (-0400)
Subject: edits
X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=commitdiff_plain;h=c0b23798213c6cb62de42853fea9b5b066588528

edits
---

diff --git a/week4.mdwn b/week4.mdwn
index 06581f01..8d89a5a6 100644
--- a/week4.mdwn
+++ b/week4.mdwn
@@ -15,6 +15,9 @@ let X = WW in
 X = WW = (\x.T(xx))W = T(WW) = TX
 </pre>
 
+Please slow down and make sure that you understand what justified each
+of the equalities in the last line.
+
 Q: How do you know that for any term T, YT is a fixed point of T?
 
 A: Note that in the proof given in the previous answer, we chose `T`