--- a/text/intro.tex	Tue Mar 15 08:01:12 2011 -0700
+++ b/text/intro.tex	Tue Mar 15 08:11:27 2011 -0700
@@ -555,7 +555,17 @@
 and
 Alexander Kirillov
 for many interesting and useful conversations. 
-\nn{should add thanks to people from Teichner's reading course; Aaron Mazel-Gee, $\ldots$}
+Peter Teichner ran a reading course based on an earlier draft of this paper, and the detailed feedback
+we got from the student lecturers lead to very many improvements in later drafts.
+So big thanks to
+Aaron Mazel-Gee,
+Nate Watson,
+Alan Wilder,
+Dmitri Pavlov,
+Ansgar Schneider,
+and
+Dan Berwick-Evans.
+\nn{need to double-check this list once the reading course is over}
 During this work, Kevin Walker has been at Microsoft Station Q, and Scott Morrison has been at Microsoft Station Q and the Miller Institute for Basic Research at UC Berkeley. We'd like to thank the Aspen Center for Physics for the pleasant and productive 
 environment provided there during the final preparation of this manuscript.