Changing the Charmed Current

We propose as an addition to the conventional charm-changing charged current the $V+A$ current ${\overline{\mathcal{P}}}^{\prime }{\gamma }_{\mu }(1-{\gamma }_5)\mathfrak{N}$. It explains the observed enhancement of nonleptonic $\Delta I=\frac{1}{2}$ weak decays, allows low-lying charmed hadrons to decay comparably into strange and non-strange final states, predicts the appearance of ${\mu }^{-}{l}^{-}$ (as well as ${\mu }^{-}{l}^{+}$) dilepton events in neutrino interactions, and leads to copious quasielastic charm production by neutrinos.