Abstract: Forrester´s model (FM) is a system of nonlineal differential equations constructed at far 70-s. Since
that time FM remains a classical example of applications of system dynamics principles. This paper shortly
describes the theory, algorithms and program WorldDyn? for end-users being interested to meet themselves with
FM. Moreover the program allows to model undefiniteness presented in the form of additive or multiplicative
noise. By the moment there is no any free-share software having these possibilities.
Keywords: Forrester model, numerical analysis, noise-immunity, applied software.
WORLDDYN AS THE TOOL FOR STUDY OF WORLD DYNAMICS WITH
FORRESTER’S MODEL: THEORY, ALGORITHMS, EXPERIMENTS