The question of simulation of amorphous metals by the method of molecular dynamics is considered from the position of the theory of dynamic systems. It is shown that for molecular-dynamics systems is typical the Lyapunov instability and structural instability by Pontryagin. In this connection the concrete atomic structure of amorphous metals is a priory unpredictable and non-reproducible.

Key words: molecular dynamics, amorphous metals, Lyapunov instability, Pontryagin instability, theory of dynamic systems, crystal cluster.