但是马科维兹补充说，他们也需要小心谨慎防止造成任何伤害。他说，现在还是初级阶段。

But, Markovitz adds, they also need to be careful, or be cautious, to avoid doing any harm. It's early days, he says.

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但所有这些仍然不能替代马科维兹资产组合理论的主流地位，它逻辑上一致并且形式上简单，已经被广大投资者和理论界所接受。

However these theories can't take the primary place of Markowitz's Portfolio Theory, which are consistent in logic, simple in form and widely accepted by investors and men of learning.

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本文主要介绍了在不考虑风险因素下的收益率法和引入风险因素的马科·维兹均值方差模型。

The paper mostly introduces the yield without considering risk factor and the Markowits Model which has considered risk factor.

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