This paradigm stresses the importance of Pareto efficiency standard.[2] In contrast to this approach, scholars like Pawel Dembinski argue that neo-classical tools are somewhat inappropriate for evaluating Soviet-type planning because they attempt to quantify and measure phenomena specific to capitalist-based economies.[3] They contend that, because standard economic models rely on assumptions not fulfilled in the Soviet system (especially the assumption of economic rationality underlying decision-making), the results obtained from a neo-classical analysis will distort the actual effects of STP. These other scholars proceed along a different course, trying to engage with STP on its own terms, investigating the philosophical, historical, and political influences that gave rise to STP, and evaluating its economic successes and failures (theoretical and actual) with reference to those contexts.