There is a mutual recursive feedback between the decision of the subject and the environment where the action of making a decision is a autonomously changing both, the environment (as the result of this decision) and the creators themselves of this action. Every new decision is based on the past experience of an individual, and by this on his developed cognitive system and axiological structure, which sometimes overweights a rational evaluation of a given problematic situation. This particularly occurs when decision concerns a social sphere and when the consequences of our action are entangled with another human being - the problem of subjective feelings and of an individual assigning meanings to particular elements in process ot this recognisable situation will depend on this interior internalised axiological structure. Therefore, the imperfection of mathematical algorithms applied in the decision-making process results from the fact that a perception of reality by human beings is always incomplete and subjective, because it is enangled in a man's internalised unrepeatable system of cultural and individual values