It refers to making a false pretense to form a Rationalization, i.e., not to care for something one wants, but does not or cannot have.
He became involved in a project financed mostly by Menarini Pharmaceuticals, aimed at the rationalization of the biochemical activity of a number of phospholipase A2 (PLA2) enzymes from different sources and, ultimately, at the design of novel inhibitors of human synovial fluid PLA2 tagged as anti-inflammatory agents.
As part of the rationalization effort, production of passenger vehicles was to take place in Fiat's large El Palomar plant, while commercials, tractors, vans, and heavy vehicles were to be built in Fiat's factory in Ferreyra, Córdoba province.