ARTICLE SYNOPSIS ...Fuzzy Expert Systems by J.F. Derry Expert systems give the technical analyst a potent set of tools to dissect trading and investment problems in short order. For traders and investors alike, the real problem with both technical and fundamental methods is that of laying out current after-tax dollars in the expectation of future before-tax profits based solely upon the guidance of 20/20 hindsight generated through past experience. However investment and trading opportunities are analyzed, investment decisions should depend upon as large a body of expertise as possible. Such expertise can be ca...