This article discusses the concepts of "freedom" and "borderline situations", their interaction. The views of the leading existentialist philosophers regarding these concepts were also examined in detail.
The article analyzes the fundamental concepts of a market economy and investment. The calculation of the economic efficiency of investment projects, with the choice of the best investment options. There are solutions to the problem: the discovery of the essence of the modern methods of economic efficiency of investments and indicators for evaluating the effectiveness.
Human freedom and border situations in the physical history of existentialism