Brian will cover the properties of mathematical sine waves and the effect of various moving averages on these. He will then highlight the difficulties caused by the variations in amplitude, wavelength and phase of the cycles present in market data. However, techniques will be described which will find the small number (10%) of securities (or indices, forex) whose cycles are currently passing through a period of stability. These stable cycles can be isolated and categorised into short, medium and long term wavelengths. The summation of the stable cycles in each category gives a very accurate prediction of trends into the near future.