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During the depositions, Cosby gives very incriminating and damaging statements. Then, there's a new DA and that person decides to prosecute the case, after the new DA takes over and during the prosecution, the DA uses those very damaging statements that Cosby made during his civil deposition… so what the Pennsylvania Supreme Court essentially said was, 'Look, you can't do this.' Even though there was no formal immunity, Cosby reasonably relied on that statement declining prosecution when he gave his deposition in the civil case, which is why he was so open.