Why do 9 out of 10 people lose money when doing contracts?

I think it is because of emotions. If you can always hold on to the chips in your hand, is it possible for you to lose money? $BTC #德国政府转移比特币 #美国6月非农数据高于预期 #Mt.Gox将启动偿还计划

The biggest advantage of quantitative trading is that it can avoid the influence of emotions, and most people's market emotions are influenced by various news released and produced by capital, leading to losses!