ARTICLE SYNOPSIS ...Phase Transitions by Christopher K. Smith Here's a concept to visually compare an indicator's historical profitability over a range of parameters simultaneously with the indicator's current standing, allowing the trader to identify those trading signals that have been historically profitable. Market technicians use technical indicators to help clarify some aspect of market behavior. For example, the price moving average helps clarify the longer-term trend of the market while eliminating shorter-term noise. One problem that arises in using indicators, however, is that it is often difficult t...