Tagged: error and mistake
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DNA DAtabases and error
JinieJinie May 8, 2012 at 11:37 am #1631
DNA DAtabases and errorJinieJinie May 8, 2012 at 11:39 am #1632
WHEN a defendant’s DNA appears to match DNA found at a crime scene, the probability that this is an unfortunate coincidence can be central to whether the suspect is found guilty. The assumptions used to calculate the likelihood of such a fluke – the “random match probability” has never been independently verified on a large sample of DNA profiles. Governments simply arent allowing independent scientific evaluations of such databases in the US, UK or anywhere elseAlexAlex May 10, 2012 at 10:25 am #1643
See whats happening in the UK right know with private lab contaminations. These happen and the only way the system is going to improve is by recognizing that they do and properly addressing themSujathaSujatha July 6, 2012 at 2:26 pm #1738
In the past year, more than 100 possible inaccuracies in the documentation of DNA profiles on the UK database have been discovered, and a further 1,500 administrative mistakes have been logged on the system. We cant pretend that DNA is foolproof. COntamination, human error and other factors play a role.Reclaim_Your_DNAReclaim_Your_DNA July 8, 2012 at 4:01 am #1740
Let us use this case as an example. This young man was falsely accused & tried based on a dna sample taken by the police, which was sent to be processed at a forensic lab (one of 3 in the country) used by the police. Only to later find that the sample had been contaminated & he was totally innocent of the crime..
Teenager spends three months behind bars after DNA blunder fingers him for rape in city he has never
Adam Scott, from Truro, Cornwall, was charged with raping a woman in a park in Blackley, Manchester, after a lab mixed his DNA with that of the attacker’s that had been taken from the victim.MiltonMilton August 16, 2012 at 7:59 pm #1792
During criminal trials, DNA evidence is represented by prosecutors as infallible, and jurors generally believe that DNA can\’t be wrong. The problem is that it can – and sometimes it is.SimoneSimone September 22, 2012 at 12:23 pm #1875
Judges need to take responsibility in their courtrooms to allow evidence critical of DNA evidence. These are not incompatible.FrancineFrancine November 7, 2012 at 2:33 pm #2245
Defendants should have the right to intorduce evidence questioning the veracity of DNA evidence and procedures. You cant allow a presumption of infallibility. DNA is not magic.FrancineFrancine December 20, 2012 at 1:04 pm #2958
Moreover they are using newer techniques that are less accurate, these need to be properly vetted and questionedFilipeFilipe April 5, 2013 at 1:24 pm #3755
I understand that they are moving toward on site technologies for rapid sequncing that are not as accurate and can reuqire confirmatory testing. How will they be used?SimonSimon July 10, 2013 at 2:28 pm #4051
Mobile technologies by definition are to be used by less sophisticated users, bypassing the lab so police can do the work themselves. Talk about conflict of interest!!!!!!LanaLana December 26, 2013 at 6:26 pm #4349
There is so little oversight no one knows the error rates of these procedures! Codis has never been open to independent study and at least a dozen countries inc the US use it.The labs have been shown to make errors in some of the grossest manners possible. The whole system is designed to allow a police state to cloak itself in “science”AlexisAlexis July 18, 2014 at 9:43 am #4802
Every technology has error as a matter of course plus the human error in operating it. This must always be factored into the evaluation.RobertRobert December 15, 2014 at 10:51 am #4933
Who checks any of this equipment, its just the word of the government.