They are evaluated and understood in relation to the aimed at end. If a theory on the inflation developed for the School of Chicago, deserving of the Prize Nobel, exitosa in the United States and England, if applied in Brazil without success, was not valid. One practical doctor without no base scientific, but very efficient in the combat to an illness, is valid. The edited laws to prevent the fraud in the exchange businesses, if will not be efficient, will have that to be changed. If a candidate politician observes that its ways of propaganda are giving little result, must search others. An analgesic medicine is good (valid) if minora pain and for the minimum of contraindications. It is chosen school for our children for the proportionate education. For displayed here, if it sees that the technological knowledge first search to know the intentions, and data these, search you arrive at the ways of carries through them.
A politician, in commands of a country, for example, needs to know well problematic the national one very, since the resources of that she can make use until the necessities duly hierarquizadas. With all these information, compete to it establishing a hierarchy, which the escopos are more urgent, or more feasible, or more important; established the intentions and its hierarchy, resta=lhe to know the ways and to put in practical these legislative, administrative, fiscal ways. All the knowledge developed there is directed, always has an intention, which only can be understood and be evaluated in function of the aimed at end. It is what E. Kant calls of Practical Reason. to the intention, determinative an action or omission, called Categorical Imperative. 5.2 – The technological knowledge, beyond having distinct values, that lead to the efficiency, also has a proper method and a logic, also paralgica call, come back does not stop the search of the truth, but yes of the validity.