Probabilistic reasoning in the law. Part 2: Assessment of probabilities and explanation of the value of trace evidence other than DNA

Problems associated with the interpretation of scientific evidence (fibres and glass) in forensic science are investigated with reference to measures of uncertainty associated with the presentation of such evidence in an adversarial context. The investigation includes the use of probabilistic arguments associated with expert scientific testimony in the courts. Cases where scientific evidence has been presented in court are studied. A series of problems were developed for, and given to, forensic medicine students' forensic science students and practitioners (advocates and forensic scientists) in Scotland to investigate their understanding of uncertainty.