As a matter of fact,if things were perfectly efficiently priced, there wouldn't be any opportunity to generate excess returns and if you make active bets--if you make bets against the market -then whether you win or lose has to do with luck.

事实上,如果资产都是有效定价的,那么根本不可能获得任何超额收益,如果你主动一搏,要从市场中获利,那么无论得失都只能靠运气了

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So we can compare the two electron configurations, and we can actually think about what we figure out from them, we see that two are lowered in energy, two electrons are raised in energy, so we have no net gain or no net loss in energy for h e 2.

我们可以比较两种电子构型，我们可以考虑,我们发现这，两个电子能量变低，两个电子能量升高，所以在He2里没有净的能量得失。

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