Knowing the error rates in a particular forensic domain is a vital measurement needed to ascertain the weight of the evidence. The appropriate weight of the evidence cannot be known without some sense of the rates at which the technique errs [4].
Forensic experts have unsubstantiated, unrealistic and false beliefs regarding their errors [13]. The “known or potential rate of error” is important information for considering the weight of the evidence, and it is one of the factors judges need to consider for legal admissibility of expert testimony under Daubert v.