  The general idea of determining cosmological parameters with gravitational
lensing statistics is outlined, and then recent work---with an emphasis on
applicability to all cosmological models, observational bias, better statistics
and robustness testing through numerical simulations---is discussed with
relevance to a scheme originally introduced by Kochanek to avoid some of the
uncertainties which plague other methods. The main result is that the
observations at present---and probably in the future as well---are more
indicative of intrinsic scatter than a hint of the correct cosmological model.
