Another way of saying this would be to point out that the defense attorney's calculation failed to take into account the prior probability of the defendant's guilt. If, for example, the police came up with a list of 10 suspects, all of whom had access to the crime scene, then it would be very illogical indeed to suggest that a test that offers a one-in-a-million chance of a match would change the defendant's prior probability from 1 in 10 (10 percent) to 1 in a million (0.0001 percent). If nine innocent people were to be tested, the likelihood that the test would "incorrectly" match one (or more) of those people can be calculated as<br>