  We apply an analytic description to the inclusive decay of the $\tau$ lepton.
We argue that this method gives not only a self-consistent description of the
process both in the timelike region by using the initial expression for
$R_\tau$ and in the spacelike domain by using the analytic properties of the
hadronic correlator, but also leads to the fact that theoretical uncertainties
associated with unknown higher-loop contributions and renormalization scheme
dependence can be reduced dramatically.
