deletions | additions       diff --git a/Payam and DNA.tex b/Payam and DNA.tex  index cf47033..980916b 100644  --- a/Payam and DNA.tex  +++ b/Payam and DNA.tex 
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\begin{itemize}  \item The onset of the diffusion-limited regime occurs {\it later} than predicted when varying the DNA length (figure 4a). But when varying the potential difference, the crossover happens earlier (figure 4b).  \item The approximations and order-of-magnitude guesses in the paper mean that we have no reason to expect high-fidelity predictions. They actually do surprisingly well.  \item But there might be a question of internal consistency: does the fact that there are two discrepancies (figures 4a and 4b) in ``different'' directions point to some problem with the theory? I should read the paper more thoroughly and try to understand the significance of the different crossover regions.  \item I could improve the work by putting error bars on the predictions -- perhaps this will boost faith in the results, or point to some hitherto unaccounted-for issue.  \end{itemize}