What is systems science? This question, which I have been asked on countless occasions, can basically be answered either in terms of activities assoc… - George Klir

# Systems science is that field of scientific inquiry whose objects of study are systems.

Applying this approach, systems belonging to different scientific disciplines are investigated in their natural forms. On the basis of experimental results, isomorphic relations between different systems are studied and, finally, some general principles applicable for all systems of a certain class are formulated.

To select an appropriate fuzzy implication for approximate reasoning under each particular situation is a difficult problem. Although some theoretically supported guidelines are now available for some situations, we are still far from a general solution to this problem.