See here
The co-developer of LCN Peter Gill is quoted from:
http://www.denverda.org/DNA_Document...0Profiling.pdf
“Interpretation of DNA profiles is assisted by the use of systems that are not too sensitive. This is important because the scientist often needs to associate the presence of a bloodstain (or other evidence) with the DNA profile itself.”
But the authors warning is also worth mentioning.
Now let’s think about what all this means for civil liberties. How would you like to live in a world in which any person can be convicted of any crime, anywhere, any time, on the basis of unassailable, “scientific” evidence? The evidence will be unassailable, because there will be nothing left of it by the time the analysis is through. They will be able to swab an object at a crime scene, LCN DNA profile it, and present it in court with no risk of contradiction. It will be their word against yours, and they will have a bunch of apparent, “scientific proof” backing them up. This is a recipe for a police state.
Effectively, the strength of the LCN DNA evidence
is decreased compared to conventional DNA
analysis. This inevitably arises from uncertainties relating
to the method of transfer of DNA to a surface
and uncertainties relating to when the DNA was
transferred. It is emphasized that the relevance of the
DNA evidence in a case can only be assessed by a
concurrent consideration of all the non-DNA evidence.
Research is currently being undertaken to devise
a probabilistic Bayesian method that encapsulates
the DNA and non-DNA evidence.
is decreased compared to conventional DNA
analysis. This inevitably arises from uncertainties relating
to the method of transfer of DNA to a surface
and uncertainties relating to when the DNA was
transferred. It is emphasized that the relevance of the
DNA evidence in a case can only be assessed by a
concurrent consideration of all the non-DNA evidence.
Research is currently being undertaken to devise
a probabilistic Bayesian method that encapsulates
the DNA and non-DNA evidence.
It is not surprising. Have you ever tried to impose some kind of probability on football results to win the pools. It dosen't work does it?
The cases in the UK of Templeton Woods (2007), Hoey (2007) and Reed/Caddy (2008/9) have reduced LCN to a laughing stock around the world.
Hopefully the Knox case will drive the final nail in its coffin.
The FSS (inventors of LCN) in the UK is on the point of financial bankruptcy and may well be wound up in early 2011.
Derrick
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