Situation - You find a good system - win/loss ratio of 80%, etc - but after trading live, you get 3 straight losers, do you give up and look for another system or keep going? Losing 20 straight trades in a row (the risk) is a remote possiblity even if the system you're following has a win/loss ratio of 80%. Up to how many trades will you do before giving up on the system? I dont think a single trade will make or break a system, so the total risk for a series of trades should be considered instead of just the risk for a single trade. pretzel