  In the context of upcoming new physics searches at the LHC, we investigate
the impact of multidimensional differential rates in typical LHC analyses. We
discuss the properties of shape information, and argue that multidimensional
rates bring limited information in the scope of a discovery, but can have a
large impact on model discrimination. We also point out subtleties about
systematic uncertainties cancellations and the Cauchy-Schwarz bound on
interference terms.
