Harmonic patterns, definitions and discovery

The Gartley pattern was described by H.M. Gartley in his book "Profits in the Stock Market" originally written in 1935. Since then these patterns have evolved. In the 1990s Larry Pesavento modified the original patterns by adding the fibonacci ratios to them, what made the patterns harmonic. Then Scott Carney and Bryce Gilmore continued this work. Bryce Gilmore discovered the bytterfly pattern. The Crab, discovered by Scott Carney in 2000, is one of the most precise of all harmonic patterns. The bat, discovered by Scott Carney in 2001 is an incredibly accurate pattern and requires a smaller stop loss than most patterns.