The discussion centers on the search for a liquid that does not dissolve any type of salt or mix with water while remaining non-conductive. The idea of using non-polar solvents, such as hexane, is suggested, as polar solvents can separate ions from salts due to their dipole moments. The conversation also touches on the fundamental reason salts dissolve in water, attributing it to the achievement of a lower energy state. The participants express uncertainty about the effectiveness of non-polar solvents in this context, indicating a need for further exploration of the properties of various solvents and their interactions with salts.