 The conviction was later reversed by the Supreme Court of California in People v. Collins (68 Cal.2d 319, 1968). The Court pointed out the mistake of assuming that multiplying the probabilities of each feature would give the probability of their joint occurrence. This assumption holds only if the features in question are probabilistically independent. But this is not the case since the occurrence of, say, the feature “man with a beard” might very well correlate with the feature “man with a mustache”. The same correlation might hold for the features “white woman with blond hair” and “woman with a ponytail”. Besides the lack of independence, another problem is the fact that the probabilities associated with each feature were not obtained by any reliable method.