Total Nerd TV Shows Like Law And Order: SVU And CSI Are Putting Real, Innocent People Behind Bars  

Zack Howe
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Everybody loves those dazzling displays of forensics on Law and Order when Ice-T spots a hair at a crime scene and takes it back to the lab to process through the database containing the DNA of every single human on the planet. However, that's not how forensic science actually works. In fact, that kind of scenework assumes said "science" works at all, while in reality forensic methods are far from foolproof. Jurors (and even judges) have been falling victim to the "CSI effect" since procedural crime dramas rose to prominence in the early 2000s.

Forensics in real life compared to forensics on CSI suffer from a major discrepancy: while jurors generally accept such evidence as absolute fact in both cases, only in one is it absolute. It may seem cool when Mark Harmon determines the killer from a blood spatter, but such evidence is as subjective as a Rorschach test, only with much graver consequences. 

That's why it's important to examine the dangers of forensic science brought about by the weird and fantastic cases on CSI (though sometimes real life can be stranger than fiction, as seen in these creepy forensic cases).

The 'CSI-Effect' Has Made Average Television Viewers Think They're Forensics Experts

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Photo:  CSI/CBS

"Talking about science in the courtroom used to be like talking about geometry — a real jury turnoff. Now that there's this almost obsession with the [TV] shows, you can talk to jurors about [scientific evidence] and just see from the looks on their faces that they find it fascinating,”

said jury consultant Robert Hirschhorn in a 2004 USA Today story, as reported by LegalZoom

For jurors enthralled with CSI and similar crime dramas, assessing DNA evidence is more than a review of dry science; it's a chance to live out the exciting lives of their TV idols. For just a moment, their "mundane" lives align with David Caruso's in a fantasy come true. Yet given the frequent unreliability of forensic science, it's more fantasy than reality in the real-world courtroom.

This isn't to say all jurors are merely TV-educated or have a taste for the dramatic. But the pervasiveness of forensics dramas have blurred, on whole, the idea of what counts as "expertise," and television production (by necessity) must do its share of cut-and-paste when it comes to depicting crime scene investigations.

Juries Have Unrealistic Expectations About DNA Evidence

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Photo:  Law & Order/NBC

“When you go to court, the jurors expect you to always have fingerprint evidence and DNA evidence on everything — even though that might not be an essential part of the investigation,” forensic scientist Sarah Owen told the Chicago Tribune. She went on to say:

“And if you weren’t able to get DNA results on something, that doesn’t necessarily mean that that individual is innocent. It just means that DNA wasn’t present. But [DNA evidence] may not even be necessary, because there’s other corroborating evidence through the investigations.”

Matthew Shaer of The Atlantic wrote,

"As recognition of DNA’s revelatory power seeped into popular culture, courtroom experts started talking about a 'CSI effect,' whereby juries, schooled by television police procedurals, needed only to hear those three magic letters—DNA — to arrive at a guilty verdict."

Shaer went on to detail a study done by a felony trial judge in Michigan, which found that 75% of local jurors surveyed expected DNA evidence in rape cases, almost half in murder or attempted-murder cases, and 22% expected DNA evidence in every criminal case.

There Are No Digital Systems That Process Forensic Evidence In An Instant

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Photo:  NCIS/CBS

It's a common sight on any crime show: a detective looms over the shoulder of their spunky forensic scientist. The "expert," who's probably aggressively goth for some reason, has just scanned of a bite mark or fingerprint and is now processing it, running it through their database containing the name and dental records of every criminal on the planet. 

“With large-capacity hard drives, it’s not uncommon to need as much as 40 hours to do a preliminary search,” forensic scientist John Briscoe explained to the Chicago Tribune. “TV dramas make it seem as if records can be searched and the case wrapped up in 30 minutes.”

Obviously, however, no such systems exist, yet jurors often expect those results. The existence of such technology (or even the perceived existence) makes forensic science seem infallible, but the reality is far more depressing. 

Bite Mark Forensics Are Coming To Be Seen As Flawed, Often Resulting In False Convictions

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Photo: Cpl. James P. Johnson, U.S. Army/Wikimedia Commons/Public Domain

According to the Oxford Journal of Law and the Biosciences, "The Texas Forensic Science Commission recently recommended a moratorium on the admission of bite mark expert testimony." And here's why: in 1997, William Richards was sentenced to serve 25 years to life for the murder of his wife in California. Even though three trials failed to provide enough evidence to convict him, a fourth trial introduced bite mark evidence, which finally swayed the jury.

After 19 years in prison, Richards's conviction was reversed, 10 years after the "forensic odontologist" recanted his testimony in which he said "the canine teeth made a 'pretty good alignment' with the husband’s teeth," but later admitted "he wasn’t even sure if the lesion on the victim’s hand was a human bite mark." Richards is not the only person to have suffered this fate, and it's increasingly clear that bite mark evidence is rarely scientifically valid.