An existing model available in literature was modified to degrade the accuracy of private information from an informer, so that he can manipulate the securities market repeatedly in a long period.

通过改进现有模型，将知情者私人信息的准确程度降低，从而使知情者可以长时间重复操纵市场。

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More centrist Democrats share the goal of universal coverage, but have gravitated toward a regulate-mandate-subsidize model because it has a lower explicit fiscal cost and keeps much of the insurance market in private hands.

FORBES: How Obamacare's Rejection Would Lead to Single Payer