I guess I panicked when I found that MMPO fails CD, & assumed that CD is unmeetable. 3-Slot ICT passes. ...It looks at the existence of defeats, rather than comparing their magnitudes. MAM & MMPO get their strategy properties by comparing defeat-magnitudes So maybe CD is incompatible with MAM-like strategy. In which case we must choose between 2 kinds of strategy problems. Well, rank-methods have other inherent problems too--lower Pt for voters who rank in sincere order when they aren't majority-favored (even with MMC)...compared to what it would be in Approval. So 3-Slot ICT has various advantages over rank-methods. Michael Ossipoff