The general aim of this paper is to show that even the simplest economic models may be largely trivial. One discusses how a value input-output model can be derived from a physical input-output model. In the physical input-output model, variables are physical quantities and prices and in the...

The Supply-Use input-output model of the SNA and Eurostat is examined. For the product-by-product IO tables, two hypothesis are possible: “product technology”, largely adopted (Eurostat A) and examined here, and “industry technology” (Eurostat B). One examines the calculability of the...

In the Supply-Use (or Make-Use) input-output model, “product-technology” (PT) or “fixed-industry-sales-structure” (FISS) assumptions are more widely adopted (SNA, Eurostat) for deriving symmetric input-output tables (SIOT) than “industry-technology” or...