On the distribution and notation of the Etruscan sibilants

A mechanical rule proposed in 1997 by Massimo Pittau for the distribution of the Etruscan sibilant graphemes sigma and san is investigated and found wanting. The etymological distribution proposed by Helmut Rix is clearly superior, yet many scholars appear reluctant to embrace Rix's findings. It is suggested that this reluctance stems in part from the incompatibility of Rix's notation with the traditional system. Consequently a simple method of reconciling the two systems is Proposed and then demonstrated in exhibiting the data relevant to Pittau's rule.