O actor, o seu problema e o valor

"The value of something depends on its potential to make a positive or negative contribution to the solution of a particular actor’s problems. Thus, value depends upon the relationship between the good and an actor and their problems. Theoretically, perceived value is defined as the difference between the situations of a person without the good compared to the situation of a person with the good. The amount of value depends on the perceived difference in goal achievement resulting from the acquisition or disposal of the good, service, or resource in question.
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The nature of any exchange is determined by certain driving forces. These stem from the interests and motives of the parties involved, who, through exchange, try to solve their problems. But problems cannot be solved in any old way. Instead, a solution needs to be perceived as more favorable and better than alternatives.
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 (1) In the search for problem solutions the parties are self-interested, and they seek advantages for themselves through exchange; (2) The pursuit of advantages is a particular feature of problem solving behavior; (3) When people search for solutions to their problems, they try to avoid or reduce risk and uncertainty.
Basically, the search for problem solutions is the major driving force behind exchange and the excess of benefits over costs, as well as the reduction of uncertainty, determine the extent of problem solution.
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Exchange is motivated by expectations that it will bring about an appropriate solution to a problem. Each exchange partner sees the exchange as means for the accomplishment of a particular task or the achievement of a particular goal. But what really is a ‘problem’?
Each potential exchange partner is in a state they perceive as unsatisfactory or incomplete. It is their intention to change their state of affairs from a less to more preferred situation with the help of exchange. If this were not so they would not engage in exchange. The discrepancy between the current and less satisfactory state and the desired future state is referred to as the “problem” if the following condition applies: the transformation of an initial state into a desired final state requires a process of search, selection, and implementation of appropriate means promising a possible problem solution. Figure 1.5 depicts the structure of a problem.
A gap between starting and target conditions, with as yet unknown means of reaching the target, creates a condition of stress or disequilibrium.

we can describe a problem as a task combined with the perceived pressure to find a solution."

Trechos retirados de "The Market Process" de Wulff Plinke e Ian Wilkinson, capítulo incluído no livro "Fundamentals of Business-to-Business Marketing - Mastering Business Markets" editado por Michael Kleinaltenkamp, Wulff Plinke, Ian Wilkinson e Ingmar Geiger