Pitchfork  is a tool described sometimes as an old trading technique but actually this tool is working till today .. this is a part from Joe Duffy 's lecture discussing the basic principle behind Andrews Pitchfork  and how to use it in trading .. 

Always remember that trading tools are limitless in number or uses and all you have to do is to pick one or two of these  tools and be the best in using them .. You don't need to master every thing to be a good trader or investor just focus on simple approaches to reach your financial goals .. ☺