The study expresses some personal experiences based on long collaborations and contacts with specialists in engineering or design spheres during more than two decades. These specialists had mostly bad experiences with some opinions or standpoints carried out by the decisions called as political or in the public interests or, as it was usually denoted, in the people’s interests. It was A.M. Weinberg who emphasized that the public frequently cannot know what the best is. The public meaning could be manipulated by (...) means of simple slogans, emotional elements or simplified conceptions concerning the sphere and level of risks. (shrink)