Most traders believe that the market follows a random pattern and there is no clear systematic way to define a strategy that will always work.

大部份交易员相信市场是一个随机模式，没有明确的系统策略能够一直有效。

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These studies show that the impact of noise and noise traders on price is systematic and could spread to most securities, even the whole security market.

研究证实，噪声和噪声交易者对证券价格的影响是系统性的，这种影响会波及大部分证券甚至整个证券市场。

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