What type of evidence might forensic scientists re-examine to affect wrongful convictions?

Physical evidence is critical in forensic science and can be re-examined using new technologies or methodologies, which can significantly impact wrongful convictions. Unlike testimonial or circumstantial evidence, which may be subject to human error or bias, physical evidence such as DNA, fingerprints, or ballistic analysis provides objective data that can either exonerate an innocent individual or confirm the guilt of a suspect. Advances in forensic techniques, such as DNA analysis, can reveal results that were previously unavailable or unclear, allowing for a re-evaluation of past cases. This aspect underscores the importance of physical evidence in ensuring justice and the integrity of the legal system, as it can lead to the identification of the true perpetrator or confirm the innocence of someone wrongfully convicted.