deletions | additions       diff --git a/Clustering.tex b/Clustering.tex  index 77c0e64..55f0b35 100644  --- a/Clustering.tex  +++ b/Clustering.tex 
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\section{Jeremie's Experiment: Clustering}  \label{sec:cluster}  {\bf Note} need to restructure this section.  When there are many swimmers, they form clusters (read \citet{http://adsabs.harvard.edu/abs/2012PhRvL.108z8303T} and others). These clusters are very dynamic / ``liquid''.  I want to understand: