They ha ve the same form as the critical continuum observed in the Cuprates. However, the | ω | dep endence of the single-particle scattering rate and in transp ort requires that such a critical continuum exist over a large momentum region. There are no expe riments to lo ok for this nor is there any theory which leads from a negative | U | model to suc h critical fluctuations. While more experiments in better samples are called for, a tentative case can be made on the basis of the Raman scattering and the tunneling data that the sup erconductivit y in Ba$_{1}$$_{−}$$_{x}$ K$_{x}$BiO$_{3}$ is also due to the new universality class of flu ctuations. The importance of this compound is that it has isotropic singlet superconductivity. From the considerations earlier, this is the class of electronically induced superconductivity which has the best chance of having the highest T$_{c}$ , because (1) the cut-off scale of the fluctuations is an electronic energy scale and (2) because the effects of inelastic scattering and self-energy are least deleterious for T$_{c}$ in the s -wave channel. But T$_{c}$ in Ba$_{1}$$_{−}$$_{x}$K$_{x}$BiO$_{3}$ is unimpressive because of its exceptionally low electronic density. That Bi is not unique in regard to skipping valence is shown experimentally by the example of Tl doped PbTe . Here at very low doping evidence [102] of fluctuations between the two valences, Tl 1+ and Tl $^{3+}$, i.e. of Cooper-pair fluctuation or charge Kondo effect [103], has been presented. This turns into a superconducting state with further doping as the kinetic energy increases. T$_{c}$ rises to about 1 . 5 K at about 1 . 5% doping. Unfortunately, the compound cannot be doped further. Fabrication of compounds with valence skipping ions listed in ref. (97) is suggested so as to stabilize the skipped valence as the average valence, hopefully with large electronic density. Unfortunately, they generally seem to be unstable towards one or the other side 55 FIG. 18: Tunneling data from Sharifi et al. [101] and connection of the slope of conductance to Tc