Saul Vance’s boss was telling him that the formulation that Saul had developed and tested was being pulled from the market, and Saul couldn’t understand why. In order to save costs, his company’s purchasing director, Lois Bidder, had resubmitted his formulation with one important change; she had taken out the ketone solvent and replaced it with PM acetate. Since Saul had done all the work and shown that the properties of the coatings changed very little with the change in the two different solvents, why was the formulation pulled from the market? Why did this change in solvent make the formulation no longer sellable, even though the properties were so similar?