  Recently, the properties of supercooled liquids have been studied by mapping
instaneous configurations onto minima of the gradient squared. It was
originally suggested that this mapping would probe higher-order saddle points
of the potential energy surface. However, it was subsequently shown that the
majority of the minima of this function are only local minima and so do not
correspond to saddles. In this comment, we provide a critique of the suggestion
made by Angelani et al. [J. Chem. Phys. 116, 10297 (2002); cond-mat/0203301]
that although these minima are not true saddles, they are almost saddles (hence
the term quasisaddles). This issue has important implications for the
interpretation of the results obtained by this approach.
