Walker v. Consumers Power Co.

assessment of the materiality of the suppressed evidence depends in part on the strength or fragility of the state’s case as a whole | assessment of the materiality of the suppressed evidence depends in part on the strength or fragility of the state's case as a whole | court stated Michigan has not extended Toussaint to promotions; plaintiff's claim also failed for insufficient evidence | because jurors believe that polygraph examinations are accurate and that witnesses reveal the truth when undergoing the examination, prosecution committed material Brady violation by withholding statement given during polygraph test that was inconsistent with later statement at trial