The document discusses polarizable charge models and the QTPIE (charge transfer based polarizable intermolecular potential energy) method. It summarizes results from applying QTPIE and QEq (charge equilibration) to dissociating NaCl and modeling the dipole polarizabilities of phenol and water. It outlines open questions around treating multiple electronic states, reparameterizing charges, and developing a theoretical interpretation of QTPIE as a coarse-grained quantum mechanical theory. Future directions discussed include implementing QTPIE in molecular dynamics simulations and studying solvated electrons.