"Systems thinking is not new; it has been around for thousands of years in many different guises. Ancient creation myths were instances of systems thinking. Operations analysis, systems analysis, failure analysis, risk analysis, corporate benefit analysis, financial modeling, quantity surveying, investment appraisal, finite element analysis, civil engineering models, economic modeling, simulations, and many more are all modern ways of thinking about systems. Imaginative visualization should be on the list, too. What is new, perhaps, is the ready availability of powerful desktop tools that permit and enable us to think about the most complex and complicated issues and systems. Processors allow us to tackle problems of such complexity and magnitude that, without them, we would be obliged to guess. The same tools reveal unexpected complex behavior from simple systems."