I agree that there are substantial problems surrounding DNA evidence.
They fundamentally stem from sound theory, but unsound (and unverifiable soundness) practice. For people who do not understand DNA is DNA and they dont understand the huge practical difference between theory and practice. These can be members of prosecution, judges, investigators, police, lawyers but also family members of the unlucky convicts, who are "dissapointed" in their innocent relatives.
But in this case they are thinking the problem is not in the labs, they think the problem was in the supplier of swabs.
I am not sure why they would find the same DNA over such a wide region as Germany or even europe. Do all european police buy their swabs from the same manufacturer? If yes why is only her DNA present and not those of any colleagues?
If police across europe use different suppliers for their DNA swabs, containers, bags ... why don't we see similar "mystery" serial killers for the other suppliers?
Also all the cases will have to be re-opened.
Potentially families of murdered people were told they were looking for the woman, while the murderer in their case might have been a male friend or relative. If someone close to you is murdered and you have a very vague (but accidentally correct) suspicion of the perpetrator, and then the police comes and tells you they are lookinng for the real perpetrator of a specific sex, this may "refute" your accidentally correct suspicion!
For one, DNA means you need to trust the police (and related labs).
If one doesn't trust them, there's no reason to trust a DNA-based "evidence" either.
Not only can DNA be planted (like all kinds of physical evidence have been planted by police in western countries in documented cases), but of course, in a dictatorship or some shady government in a banana republic, "we found a DNA match" can be just a BS empty statement made because of political reasons -- and no one will be the wiser.
They fundamentally stem from sound theory, but unsound (and unverifiable soundness) practice. For people who do not understand DNA is DNA and they dont understand the huge practical difference between theory and practice. These can be members of prosecution, judges, investigators, police, lawyers but also family members of the unlucky convicts, who are "dissapointed" in their innocent relatives.
But in this case they are thinking the problem is not in the labs, they think the problem was in the supplier of swabs.
I am not sure why they would find the same DNA over such a wide region as Germany or even europe. Do all european police buy their swabs from the same manufacturer? If yes why is only her DNA present and not those of any colleagues? If police across europe use different suppliers for their DNA swabs, containers, bags ... why don't we see similar "mystery" serial killers for the other suppliers?
Also all the cases will have to be re-opened.
Potentially families of murdered people were told they were looking for the woman, while the murderer in their case might have been a male friend or relative. If someone close to you is murdered and you have a very vague (but accidentally correct) suspicion of the perpetrator, and then the police comes and tells you they are lookinng for the real perpetrator of a specific sex, this may "refute" your accidentally correct suspicion!