A key selling point for MapReduce is its ability to abstract the operational parallelization semantics - how parallel programming works - away from the developer.

MapReduce的关键特点是它能够对开发人员隐藏操作并行语义—并行编程的具体工作方式。

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But fluid intelligence, the ability to analyze abstract situations involving novel sets of rules, plays an outsize role.

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Superior mental faculties, such as language and the ability to engage in abstract problem solving, are the sort of explanations that are currently all the rage.

ECONOMIST: Gaining the upper hand

But when the same test was presented simply as an abstract laboratory tool, with no relevance to ability, the scores of blacks and whites were virtually identical.

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