--- a/text/intro.tex Fri Jun 17 12:01:43 2011 -0600
+++ b/text/intro.tex Fri Jun 17 12:12:53 2011 -0600
@@ -544,9 +544,9 @@
\subsection{Thanks and acknowledgements}
% attempting to make this chronological rather than alphabetical
We'd like to thank
-Justin Roberts,
+Justin Roberts (for helpful discussions in the very early stages of this work),
Michael Freedman,
-Peter Teichner,
+Peter Teichner (for helping us improve an earlier version of the $n$-category definition),
David Ben-Zvi,
Vaughan Jones,
Chris Schommer-Pries,