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\section{Exhibits}:  1) TlCsCl3  Qualitive idea. Immidate BaBiO3 in a different region of periodic table using other elements that disproportionate. Correlations enhance electron phonon coupling.  a) Parent compound . Gap, requires GW. ( LDA fails ) .  b) Checked some Local stability . compute phonos  [ global stability not done ]  c) reaction path as a slice of a convex hull  Outcome new material, undopable. Is it realted to the large heat of formation ? self localization – disorder ?  2) Cuprates Chuck 101. EPL.  Qualitative Idea. Reducing the charge transfer gap, increase Tc in cuprate like structures.  a) DMFT to compute gap.  b) Local checks. In plane rotations. No global structural optmiziation.  c) Check some slices using reactions.  More work shows that that slices give a different picture.  Outcome : do any of these materials exist ?  3) Cuprates .Chuck 103. Hg .  Revisisted with a and b done very well.  Outcome : proposed compound with more confidence.  Jury is out.  Discuss the notion of confidence.  Accuracy of LDA. Metastable structures do exist. One cuprates are above the hull.  4) BaCoSo.  Illustrates the need for Ran’s reshuffling.  Illustrates the need for U.  Outcome, a material that was found slightly earlier experimentally.