Non-monetary economics with its generalized products (see Mathematical models) can not be fed with market information. Nobody sells or buys generalized products and prices have little sense for non-monetary analysis without proper interpretation.Thus it is interpretation that produces data for non-monetary calculations. As long as a machine is hardly capable of imaginative interpretation of facts it is an expert who becomes the actual source of data.
No doubt an expert inherently falls back upon measurements but who can measure such things as the force of a social class and express it in terms of energy? So a rational feeling substitutes for measurement. Alas this substitution doesn't help out. Very often an expert cannot put into words (the more so into numbers) what he is definitely feeling. But still there is a way to measure a rational feeling. To do it an expert has to be asked a question which can be answered in a very simple reflex action. For example he has to locate a point on a graph describing the manifold of possible generalized answers.
Russian texts in this zipped file contain an expert method of measurement when there are no vivid logical schemes for parameter valuation.
A sceptic may rightly ask: "Is non-monetary analysis dependent on expert prejudice or error?" If data were supplied by one expert they would be certainly biased in sense or quantity. But one expert is incapable of furnishing all aspects of modelling so only a consistent kernel of expert knowledge penetrates the mathematical structures and if this knowledge is inadequate to forecasting then it will become clear what kind of information is lacking.