deletions | additions       diff --git a/subsection_The_P__rm_act__.tex b/subsection_The_P__rm_act__.tex  index 658caca..6ed4818 100644  --- a/subsection_The_P__rm_act__.tex  +++ b/subsection_The_P__rm_act__.tex 
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\begin{equation}  f_{\left( \Gamma_{\rm act} = {\rm const.} \right)} \equiv A(P_{\rm act})/A(P_{\rm max}) \propto \left( \dfrac{P_{\rm act} - P_{\rm min}}{P_{\rm max} - P_{\rm min}} \right).   \end{equation}  As expected, the probability to detect a devil with $P_{\rm act} = P_{\rm min}$ is zero. Of course, zero, and  the probability for detecting a devil with $P_{\rm act} = P_{\rm max}$ is not actually unity, just the relative probability. Calculating the actual probability would require us to define the total area of the arena over which observations were made, e.g. the area of the playa where the barometer was deployed.