We give (equivalent) friendlier definitions of classifiable theories strengthen known results about how an independent triple of models can be completed to a model. As well, we characterize when the isomorphism type of a weight one extension N/M is uniquely determined by the non-orthogonality class of the relevant regular type and discuss when N is prime over Ma for some finite a∈N. This is part of an ongoing project with Elisabeth Bouscaren, Bradd Hart, and Udi Hrushovski.