You should learn to use a hammer before you pick up a nail gun. Likewise, you should become comfortable managing classes manually before you try to use more powerful tools.

在想要使用电动射钉枪之前要先熟练使用锤子，与此相似，在试图采用更强大的自动管理工具之前也要先能自如地手动管理这些类。

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Goldman said the less frequent selection doesn't mean managing-director classes will get bigger.

WSJ: Goldman Symbol Gets More Elusive

They are also more likely to be consigned to special education classes or prescribed mood-managing drugs.

ECONOMIST: Lexington

State Street Global Markets launched a new tool Wednesday that allows investors to spot unusual trends across different asset classes and respond accordingly when constructing or managing portfolios.

FORBES: Ride Market's Waves With State Street's Turbulence Index