mean age of the M32 population increases with radius, so there may well be a mixture of ages present in the PC field; however, a spread in age can account for only a modest amount of the spread in giant properties implied by the CM diagram morphology, as we now show. In Figure \[fig:cmtracks\], we show a set of three isochrones (Worthey 1994) with ages 2, 5, and 15 Gyr. Since the three tracks can be made to overlap by making only modest metallicity changes among them, the age structure is impossible to deduce from the color distribution of the giant branch alone. The tradeoff between age and metallicity for any assumed RGB track is approximately $d\log|\tau|=-1.7d\log|Z|,$ where the minus sign indicates that a younger age is counteracted by increased metallicity. On the other hand, since age effects are less important than Z, the color spread must primarily reflect the intrinsic metallicity distribution, with ambiguity in age causing only minor uncertainty. This is evident in Figure \[fig:cmtracks\], where we show RGB tracks for clusters with diverse metallicities, and in Figure \[fig:cmtheory\], where we show theoretical RGB tracks covering a wide range in both metallicity and age.

We can demonstrate the 