1. Empirical observation shows that the agents of the Data Processing Center (DPC) (Management, Users and Computers) behave in the same way as the agents of a nation (Government, Households and Firms).
2. Models can simulate this behavior. Therefore, economic models (such as the Income–Expenditure model, the IS–LM model and the Aggregate Demand and Supply model) are also applicable to the Data Processing Center.
3. In order to apply the economic models to the Data Processing Center, it is necessary to establish the correspondence between the economic variables and the computer variables: the GDP corresponds to the throughput, the average price level to the average transaction weight, the employment level to the multiprogramming level, the money to the service unit, the interest rate to the utilization rate, the nominal wage to the service rate, and so on.
4. Economatics is based on IS–LM–AS framework.
5. Since economic models correctly describe the behavior of the Data Processing Center, this means that the DPC really behaves like a nation. So, the DPC is equivalent to the nation, it is a small–scale model of the nation. Thanks to the equivalence between DPC and nation, it is possible to use the DPC as a real laboratory to run economics experiments in conditions close to those of the real world.
6. The Data Processing Center uses digital money (service unit) to produce digital goods (information). DPC adopts the dual circulation of money: the euro (managed by banks) for consumption of “external" real goods (for example, food), and the digital currency (i.e. service unit, managed by DPC management), for consumption of “internal" digital goods (information).
7. Since the DPC is equivalent to the nation, this also means that the digital nation is equivalent to the DPC. As a result, the digital nation could also adopt the dual circulation of money: the euro (managed by the banks) for exchanges of foreign goods, and digital currency (managed by the State) for the exchange of goods within the nation. The double circulation of money could be the solution to the main problem of the digital nation – the generational unemployment – caused by high automation and dis-intermediation.