--- a/text/intro.tex	Sat Jun 26 17:22:53 2010 -0700
+++ b/text/intro.tex	Sun Jun 27 12:28:06 2010 -0700
@@ -448,6 +448,6 @@
 
 \subsection{Thanks and acknowledgements}
 We'd like to thank David Ben-Zvi, Kevin Costello, Chris Douglas,
-Michael Freedman, Vaughan Jones, Alexander Kirillov, Justin Roberts, Chris Schommer-Pries, Peter Teichner \nn{and who else?} for many interesting and useful conversations. 
+Michael Freedman, Vaughan Jones, Alexander Kirillov, Justin Roberts, Chris Schommer-Pries, Peter Teichner, Thomas Tradler \nn{and who else?} for many interesting and useful conversations. 
 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.