New prospects for mankind in searching for and developing new sources of energy, arms race, overcrowding and ecological crises present the human with a serious choice. The choice may relate to the further existence of people on Earth. In the context of most challenging political, economic and social crises, the tandem of natural and human sciences produces unexpected results, despite the crises accompanying these processes. This article presents a model of the society and a model of the human in the (...) systemic parametrical aspect. The human is considered as part of the “society” system. The research suggests applying the systems parametric method developed by Prof. A. Uyemov in the 1960s. Humanity creates increasingly frequent bifurcation conditions for human life. As an adaptive mechanism, the human has to develop survival strategies and well-being strategies. The paper presents some aspects of the adaptive mechanisms of the 21st century man. It also considers some threats arising out of environmental variability. Cyborgization is one of such threats. The research includes dual system modelling of the “society” system based on the complementarity principle. It shows that there are two definitions which have different concepts, structures and substrates but constitute the entirety of the object of interest. (shrink)