In the case of mental endeavor...
In the case of mental endeavor, it is more complicated, for what scientific scale or measurement unit can ever discover what the manager of a large system is guessing about how he can bring about his system's progress? Which scientific measurement scale can be used by a discoverer, an artist or a social pioneer to determine his rout to success? Can we hope to have a scientific measurement someday for the emotional efforts made by man in order to achieve his highest goals?
What precision tools can ever determine the measurement units for education and create a class which can create both the likes of Einstein and Planck and also savage tyrants?
Can we expect to see mathematics, physics, physiology and psychology to join forces one day and determine the scientific measurement system that can measure the activities of a faithful soul, which is full of mental endeavor, or physical work that is filled with hope and character and aim for the highest of social goals and interpretation of the aim of life? Undoubtedly not.
The Domains of the Value of Work The issues on work and value are not confined to a economic aspect; work and its value had better be studied in three domains: 1- The Purely Economic Domain: Economists deal with the observable effects of work, its usefulness, demand, production, etc. Man and human values and principles seldom show up in economists' discussions.
Some economic schools of thought, like the physiocrats, consider issues concerning work as purely economic, and ignore human beings who do no work at all. They see economic effects similar to other physical issues; they even let the powerful to do as they please - with the excuse of enforcing social order - which actually allows them to also break any law they like, too.
2- The Socio-economic Domain: Here, dealing with issues on work and its value is more difficult, for the social factors of work, production and distribution and the need to prevent inflation and unemployment have a great influence on work and labor. In this domain, work and its value find a humane aspect, and profiteering tendencies are decreased.
However, some intellectuals interpret the society in a way to pay less attention to the value of man; they see the society as a set of individuals who are absolutely free, and should only be careful not to disturb others. From such a viewpoint, social laws only serve to provide mutual coexistence.