In other words, Sonnenschein–Mantel–Debreu raises questions about the degree to which general equilibrium theory can produce testable predictions about aggregate market variables. For this reason, Andreu Mas-Colell referred to the theorem as the “Anything Goes Theorem” in his graduate-level microeconomics textbook.
In essence, Sonnenschein–Mantel–Debreu challenges the notion that general equilibrium theory can yield predictive models for aggregate market outcomes. Consequently, Andreu Mas-Colell labeled the theorem the “Anything Goes Theorem” in his graduate-level microeconomics textbook.