His talk will consist of a broad ranging treatise on the philosophy of technical analysis, in particular an examination of the tension between art and science inherent in the discipline. It is not meant to be authoritative in academic terms, but rather will be an attempt to apply the experience of 20 years as a commercial agent in technical analysis to the broader concepts which so many practitioners take for granted. He will touch on technical patterns and pattern recognition, psychology and behavioural, economics, art and science.