At best there is a weak statistical association and not a causal link between DNA and intelligence.

DNA 和智力之间最多只存在着微弱的统计关联，而不是因果关系。

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But most researchers agree that, overall, the correlation between intelligence and successful decision-making is weak.

但是大多数研究者都承认，总体上说，智力才能和成功地做出决定之间的相关性是微弱的。

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Now there are still many problems in modern distance education such as weak generality, flexibility and intelligence, etc.

目前现代远程教育系统中存在着通用性不强、灵活性和智能性差等诸多问题。

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Our correspondent says the failure to determine whether Saddam Hussein is alive or dead shows just how weak Western intelligence is.

BBC: Saddam urges Iraqis to fight

But it's understanding of human intelligence within Iran is rather weak and then this is something that U.S. intelligence has been lacking.

NPR: U.S. Intelligence on Iran Faulted

The White House has since said intelligence was too weak to support the assertion.

CNN: Rice cites 'personal responsibility' over disputed uranium claim