diff --git a/deal.tex b/deal.tex
index be20d4b..b9f8e3f 100644
--- a/deal.tex
+++ b/deal.tex
@@ -62,8 +62,8 @@ think and act accordingly.
 
 \newpage
 
-\section{A short glance on reductionism and mechanicism}
-\label{sec:mecha}
+\section{Mechanicism: Where engineering meets biology}
+\label{sec:mechanicism}
 
 In the 20th century, biology was dramatically affected by physics and
 engineering, and this has brought revolutionary advances in
@@ -326,6 +326,9 @@ the cytoskeletal track it is attached to
   \label{fig:ratchet-motor}
 \end{figure}
 
+\section{A Deal: Mutually beneficial interactions}
+\label{sec:deals}
+
 Seeing Life as an ensemble of machines biases how we expect to collect
 profit from acting on it.  Machine means control: we are constantly
 looking for knobs which we could turn this or that way, and which