--- a/text/intro.tex	Fri Aug 05 12:23:45 2011 -0600
+++ b/text/intro.tex	Fri Aug 05 12:27:11 2011 -0600
@@ -557,8 +557,9 @@
 Kevin Costello, 
 Chris Douglas,
 Alexander Kirillov,
+Michael Shulman,
 and
-Michael Shulman
+Rob Kirby
 for many interesting and useful conversations. 
 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.
@@ -570,6 +571,7 @@
 Ansgar Schneider,
 and
 Dan Berwick-Evans.
+We thank the anonymous referee for numerous suggestions which improved this paper.
 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