CSI Effect: Things TV shows got wrong
Hello Earthlings!! Watson here with a little bit of a PSA.
TV really changes public perception on crime scene investigations and forensic science. You beauties all know what I am talking about. The CSI franchise and spin-offs, Criminal Minds, NCIS, Bones, Dexter… there are so many crime shows out there, and they all have unrealistic portrayals of what actually happens in a crime scene.
I just want to outline some things that crime shows portray that might not be true, and how it can affect a criminal investigation and the trial that comes after.
The first thing that is problematic is the workload. Most shows have investigators process the crime scene, collect evidences, analyze them, but also conducting raids, pursuit, arrest, interrogation, and solving the crime itself (all within an hour too). Realistically, scene investigators will only investigate the scene, they are not even involved in the analysis of the evidence to help preserve objectivity of scientific evidence (those generally get sent to labs for analysis). CSI personnel definitely have nothing to do with suspect arrest and interrogation, that is all left to uniformed officer and detectives.
Also crime shows tend to have high-tech magic as science. There are technology and machineries featured in the show that just simply do not exist today. Or if it does, it has unrealistic processing timeline. And when there is a result, TV likes to have absolute certainty while real CSI-ers tends to avoid using “match” to introduce the concept of probability uncertainty.
“How does the CSI Effect affect real life?” you wonderful people might ask. It influences the standard of proof for prosecutors during a trial. Jurors now demand more forensics evidence, and have unrealistic expectations for the capability of forensic technology. It means that when there are no evidences present, there are higher chance of acquittals. It also means that jurors put a lot more confidence in forensics without understanding the science behind it. This is problematic when expert witnesses do not explain the probability of science failing.
Of course this is not a post telling you all to avoid watching crime shows. They are fun, they pointed us towards our career choices. We just want you lovelies to watch those shows critically, and understand the impact the CSI Effect might have in your lives.