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respective discipline to analyze the evidence and figure out how it fits into the bigger picture. It is essential that forensic scientists use the right techniques and instruments for collecting and preserving evidence for it to be admissible in court. If there are problems with the manner in which evidence was collected from the crime scene, or if it gets mishandled while being transported to, or analyzed at, the lab, it may no longer be useful to the case. Forensic scientists must stay up to date with the most reliable techniques and instruments, as well as scientific theories, that apply to their practice and use them consistently. Otherwise, their work on a case becomes compromised, and they could eventually lose their credibility. If a piece of evidence becomes central to the case and the case goes to court, forensic scientists may then be asked to give their expert testimony, explaining why that particular tire mark or fingerprint proves a certain point. Forensic scientists can give expert testimony for either the prosecution or the defense depending on the case, but ultimately their job is to give honest, unbiased interpretations of the evidence that help guide the jury as they make a decision regarding the verdict. In such cases, it is critical for forensic scientists to be completely objective as they present the evidence and not allow their interpretation of the evidence to be swayed by any personal bias or external pressure. Courtrooms can also be intense, even contentious environments. As expert witnesses in criminal cases, forensic scientists will be questioned and cross-examined by both the defense and prosecution. Individuals who want to pursue a career in this field must have a certain level of stamina and tenacity, as well as the ability to stay calm and controlled under pressure, if they want to be successful. They must have a thorough understanding of the scientific methods and principles used to collect, analyze, and interpret evidence so they can sufficiently explain it to members of the jury. To that end, forensic specialists should have strong written and verbal communication skills, for both writing reports and presenting in court. A Developing Field Forensic science is not infallible. Even though the practice is centuries old, new technology and scientific discoveries continue to highlight flaws in the system while offering more accurate solutions and practices for the future. These flaws can be disheartening to newcomers, especially if they’ve resulted in wrongful convictions or in evidence not being allowed

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Introduction: The Value of a Lasting Impression