http://popups.lib.uliege.be/1373-5411/index.php?id=2039 Index terms fr 0 http://popups.lib.uliege.be/1373-5411/index.php?id=2036 Two modes of weak anticipation are applied to production systems. When such a system is being designed both the modes interact. If simulation support is applied, the interaction causes that a system with simulating elements is simulated, i.e. one meets nesting simulation models. In other words, when we anticipate the system existence we should take into account the fact that anticipation will exist in the system during its operation stage. Although the essential problems related to the nesting of simulation models have been solved, some obstacles remain. They are rather of a psychological character and they can exist during the design of any system. For the branch of production systems, they are diminished by a simulation system REFLECTIVE QNOP, the principles of which are described in the present paper. Fri, 26 Jul 2024 15:31:18 +0200 Fri, 26 Jul 2024 15:31:30 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=2036