The advances by Keynes and Sraffa beyond microeconomic analysis, with one considering aggregate quantities and the other the value relationships between wages and goods, directly seek to understand the variables of greatest importance for the welfare of society. The ancient themes of commutative justice and distributive justice maintain all their relevance.
Economic analysis must go back to investigating first principles, rediscovering the links with the other dimensions of society of which the economy is part. This can come about in empirical fashion, as often happens. But that is not sufficient.