or approximately 0.0009%. If, however, the other 9 suspects were tested and did "not" return a match, then the probability of the defendant's guilt has increased from the prior probability of 10% (1 in 10 suspects) to 99.9991% on the basis of the test. The defendant might argue that "lists of suspects compiled by police fail to include the guilty person in 50% of cases" — if that were true, then the defendant's guilt would have increased from the prior probability of 5% (50% of 10%) to 49.99955% on the basis of the test — in which case "reasonable doubt" could be claimed to exist despite the positive test result.