(treated as sing. or pl) a social science concerned chiefly with the production, distribution, and consumption of goods and services
Given its increasing scope, modern theoretical economics is perhaps best viewed as the study of human decision-taking and its implications, under useful simplifying assumptions, particularly about rational behaviour and human motivation. Indeed, economists have sometimes justly been accused of stretching the simplifying assumptions to explain any observed behaviour, rather than developing more realistic accounts of it — Evan Davis
economic aspect or significance
We need to consider the economics of the operation
economist /iʹkonəmist/ noun