Just as confidence is vital to success, so overconfidence typically leads to downfall. And nowhere is such hubris more prevalent than when boardrooms suffer from acquisition mania.

就像信心对于成功至关重要一样，过分自信通常会导致失败。在董事会患上“并购狂热症”时，这种狂妄自大表现得最为常见。

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Nor has the bull market been accompanied by any mania among retail investors, such as the “day trading” fad of the late 1990s.

而且对于此次牛市，并没有散户投资者狂热伴随出现，像是90年代后期的“即日交易”狂热。

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While treatment-emergent mania is infrequent, it can have striking consequences, such as behaviors that lead to hospitalization or even imprisonment, Dr. Frye said.

Frye博士说，虽然治疗诱发的躁狂不常见，但它却有显著的后果，比如出现一些行为使得需要住院治疗甚至监禁。

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The Busang affair was not, first of all, a speculative frenzy such as the Dutch tulip mania of the 17th century or the South Sea Bubble of the 18th.

ECONOMIST: All that glisters . . .

As long as markets display such bipolar disorder and switch from periods of mania to periods of depression, then mean reversion should continue to merit worth as an investment strategy.

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