During the late-'90s technology bubble, Griffin and his research partners watched as individual investors kept buying tech stocks as their prices continued to fall, thinking they were buying a bargain when in fact they were hitching themselves to an anchor.

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The second reason for thinking Mr Prodi is not about to fall is that the right is in disarray.

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And you fall victim to the same nagging self-doubt from thinking about that one time you did something right, that you do from dwelling on all the times you did everything wrong.

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