只要能够尽量避免犯重大的错误，投资人只需要做很少几件正确的事情就足可以保证盈利了——大道至简，人性复杂，数学简单
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用亏损概率乘以可能亏损的数量,再用收益概率乘以可能收益的数量,最后用后者减去前者。数据会告诉你你的方法能不能经得起市场与时间考验。保持交易技巧的一致性，可能更有效考核方法的实用性
哇！这数学好复杂，眼睛看花了。休息会儿，再看！