I. R. Prigogine's philosophy of instability gives rise to the illusion of instability of biosystems
The speech of the Nobelist I.R. Prigogine initiated the development of the new section in philosophy, i.e. philosophy of instability. From the standpoint of the new theory of chaos and self-organization (TCS), the paper proves a specific feature of social and biological systems which displays in persistent chaotic dynamics of the state vector of such specific systems of the third type. We present a table showing the transition of science from determinism to stochastics and further to chaos of two types: chaos by I. Prigogine and TCS chaos. In TCS, instability (chaos) is typical for evolution of social systems too; it is possible to mark out three types of society: deterministic, stochastic and chaotic (self-organized) ones. The paper shows that dynamics of the evolution of societies and that of the development of science have common features (in the aspect of transition from certainty in determinism to complete uncertainty in TCS); also, it is typical to individual social development of each person.