" Estimates are difficult to establish, but a study led by Samuel R. Gross, a professor at the University of Michigan Law School, concluded: “If we reviewed prison sentences with the same level of care that we devote to death sentences, there would have been over 28,500 non-death-row exonerations [in the United States] in the past 15 years rather than the 255 that have in fact occurred.”12 "

― Matthew Syed , Black Box Thinking: Why Some People Never Learn from Their Mistakes - But Some Do