For Robbins, the insufficiency was solved, and his definition allows us to proclaim, with an easy conscience, education economics, safety and security economics, health economics, war economics, and of course, production, distribution and consumption economics as valid subjects of the economic science."
Yéning sekadi Robbins, kawéntenan sané kasengguh nénten waneh punika sampun prasida kacawis, raris saking irika prasida antuk negesang, antuk manah becik, ekonomi pendidikan, ekonomi keselamatan taler keamanan, ekonomi kesehatan, ekonomi payudan, miwah ekonomi produksi, distribusi miwah konsumsi pinaka subjek sané sujati ring ilmu ekonomi."