Yet again - and hopefully for the last time - no-one should have to point out that demonstrating the origin of contamination requires that the origin was tested (by luck or modus operandi) and that such records be passed over to the defence regardless of the importance or use in the actual case.
The defence can not be expected to demonstrate the route of contamination if the prosecution/police consultant neglected to test it.
As such it's entirely the responsiblity of the police/prosecution forensics team to demonstrate that they took reasonable precautions against contamination - as in literally. Novelli shouldn't have backed up Stefanoni, but should have been asking her to pay back some of her wages for not doing her job.
It's the police experts fault for this mess, end of story. No if's or buts.
The defence can not be expected to demonstrate the route of contamination if the prosecution/police consultant neglected to test it.
As such it's entirely the responsiblity of the police/prosecution forensics team to demonstrate that they took reasonable precautions against contamination - as in literally. Novelli shouldn't have backed up Stefanoni, but should have been asking her to pay back some of her wages for not doing her job.
It's the police experts fault for this mess, end of story. No if's or buts.