This below is from retired Italian Judge Edoardo Mori. Interesting to note his words on the fact the three accused were not at trial together. The whole article is enlightening, this is only a part of it. Cannot link to all of Mori's very very pertinent articles but I have no doubt most of you have already read them. The one on DNA is particularly relevant.
Google translation.....
"I remember the case of the murder of Meredith Kercher in Perugia where I had the satisfaction of azzeccarne the underlying problem as early as April 2009. See my page where I referred to the extreme delicacy of the investigations on DNA, has been fully implemented by an appraisal conducted in court of appeal. But it was enough to see the movie in which one of the investigators triumphantly waved the famous bra to understand that the crime scene had intervened the infamous "team destruction of evidence" ! ( Update Note : the two defendants were acquitted by the court of Assizes of Appeal of Perugia October 3, 2011 , also in this case the judgment has censored the total inconsistency of the prosecution's plan is not based on a critical evaluation of the evidence, but on a supine acceptance of the thesis of PM and improbable conclusions of the police . Judgment has observed something that should have been clear to everyone from the beginning : that the motive may be assumed at the beginning of the investigation to direct them , but when it comes to process the motive must be proved, not enough to argue that if the defendants had committed the murder, a motive force for bringing this ! in the case of Perugia was then something unusual and never seen that before three defendants in opposition to one another it has been decided to separate the judgment against one of the defendants , so precluding the possibility of a normal hearing control of individual positions. )
This only because , as we shall see , it seems that the investigators do not trust most of the test logic, which instead will always be the most reliable . Statistics show that in almost all cases a crime is trivial and that it is useless to look for solutions to crime novel and which are still valid with the rules established by a medieval philosopher , who was famous for the logical rules called " Occam's Razor" :
- Factors being equal the simplest explanation is to be preferred.
- Do not multiply the elements and subdivisions more than necessary.
- Do not consider the plurality if not necessary.
- It is pointless to do with more what can be done with less.
In other words , there is no reason to complicate what is simple . Inside a reasoning or a demonstration should instead sought the simplicity and conciseness . And unfortunately in many cases the trivial answer is that you just do not know who the author of the crime , and what a find it is foolish to want to force the prison putting the suspects .
What is most striking in all these cases is the total inexperience of the PM that faced with sensitive cases leave get their hands on the first unwary evidence that they operate , then they let the modest laboratory experts of the police to do analysis by university laboratory , technical expertise or that are made from ballistic decisive first scalzacani that advise the secretary them , they do make a forensic autopsies of murder victims that have seen very few . And all the more striking the arrogance with which these investigators insist in not wanting to admit and correct their mistakes early , even before the evidence .
( 'azzerccarne' is a mispelling in first line. Meant to be azzerccane meaning 'guess'. So Mori guessed the underlying problems early on.)