  We discuss the new state $D_{sJ}(2317)$ discovered by BaBar and demonstrate
using QCD inequalities that if indeed the $f_0(980)$ and the new $D_{sJ}(2317)$
($0^+$) are primarilly made of four quarks that a new I=0 ``$\bar DD$ bound
state'' at a mass smaller than 3660 MeV must exist. Observation of such a state
will constitute definitive evidence for four-quark states.
