How reliable is forensic science in general?

I can not explain science, so I will not try to explain it. I collect and submit forensic evidence. If you find it, or more precisely, the arrangement will be collected by qualified personnel - CSI staff

People often make mistakes and forensic evidence commits a crime - it is a fingerprint showing the contact between the finger and the surface, or two objects such as traces of DNA (blood, saliva, etc.) indicating the flow of this body fluid Indicates contact between. Objects related to the investigation or human body to the surface

Everything is the key. If you find that the fingerprint of a morning drink can be placed next to your body, this is a good reason to interview me and you may be arrested. However, if the drink is one of about 200 people outdoors and that night was just one of the 100 festivals before the opening of a large music festival, the value of the evidence itself It fell dramatically. It may still be significant evidence, but it is not the only one

If evidence is found on a moving object, a drink can is a typical example. In other words, extra work is necessary to judge whether the object has been touched after it was found on the scene by touching another place at the crime scene. On the road (like someone's car), is there a reasonable explanation for my DNA? The value of saying "We have your DNA on the spot - guilty" will prove the existence of the scene.

If someone finds their DNA in the victim (sperm is an obvious example here) - use your imagination - and there are many explanations to show innocence. These cases are often not problems of forensic medicine itself but problems of consent. If consent is presented as defense, this will always guide the investigation as it is always possible that it is true

Then, cross contamination, whether the collected forensic sample is properly detained or "scraped away" by colliding with another item in the same bag, or whether the person first finds a sample from the suspect from the scene There is a problem. Therefore, are you being accused of erroneously using the evidence of the site to pollute the suspect?

These problems do not necessarily affect the test itself. If the results of the sample being observed are contaminated, it is not before a lab or test error occurs.

Regarding the reliability of scientific testing and analysis itself, I must continue to study the latest science and law. If there are new tests that are more accurate and more reliable than the existing tests (we do this as the situation evolves), I can only think that a new test will be adopted. Just because the accuracy of the new test is ten times the accuracy of the old test opens up the possibility to appeal the evidence gained through the old test which is a problem of the previous test system. It does not mean that the old test is wrong.

I think that we can not solve weaknesses in forensic field only by judicial review. (1) an effective and reliable method for accurately analyzing evidence and reporting the results and (2) minimizing the risk of the outcome based on subjective judgment or subjective judgment due to contamination. The threat of error or prejudice. Because of the many problems currently faced by the forensic scientific community and the inherent limitations of the justice system, the forensic scientific community that is currently being constructed can not consistently fulfill the justice system. Lawyers and judges should not be expected to solve scientific problems. What we need is improving the forensic science community to better meet the needs of justice.

Forensic science means forensic medicine (forensics in Latin). This means frank discussion and discussion. But in more modern cases, forensic medicine applies to the court or justice system. In combination with science, forensic science means using scientific methods and processes to solve crime. Since the 16th century the practitioner began to use forensics in the late eighteenth century and the first evidence of modern pathology was revealed The first law school was founded in 1909 and centuries- The development of forensic medicine was used. To clarify the mystery, resolve the crime, convict criminal suspects or to forgive