Well put. In general with the "new" forensics I've suggested that every judicial system needs to reconsider how to handle them. I would suggest that a truly independent consultant be given the data and make an analysis without knowing what case they are working on.
If Mach believes that his judicial system was corrupt in this case, in particular with C&V, I wonder if he would support bringing in experts from Germany or some other country with no dog in the fight. I would welcome having a panel of DNA forensic scientists look into the DNA work done.
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No, I wouldn't accept that.
I have no problem with nationality of experts, I know Costagliola Comodi & Mignini wanted to call a Spanish expert, for instance, they relinquished only as they had a logistic problem having to fly him many times for multiple sessions.
I'm ready to accept experts of all nationalities as witnesses.
What I am not willing to accept, is experts as judges.
Within the Italian system nobody is regarded as "truly independent" and trusted on principle; it's the nature of the system. Experts in this systems are ilke lawyers. They can be excellent. They can convince also through their authority. But they have no right to a "neutrailty pass". Their work is to convince by answering through argumentations. But the only subject who is supposed to understand the real weight of each argumentation is the judge.
Science, like all other techniques and means employed in the trial, is an instrument. Not a value itself. The instrument may be of excellent quality or mediocre, but itself is only an instrument, it's there to serve a purpose, it is not itself the purpose. It's something there to be used, and a witness is not allowed to "know" how he will be used.
It's like having an excellent witness or rather a mediocre one. Like having a beautiful picture taken by an advanced camera, rather than a low quality picture taken with a smartphone. Their quality may have relative importance. What only matters in fact is whether they are sufficient to provide any useful contribution.
Either mediocre instruments or ecxellent ones can be both useful, or non-useful; a mediocre instrument can be good, achieve the goal and serve its purpose. Or an excellent instrument can offer useless output, like an expert providing opinions of the finest quality but off-target and not answering the specific logical point the judge believes is important.
The key concept is that an expert's mind is always "non neutral", even when he/she believes to be unbiases and intellectually honest. An expert is always a witness, and therefore just a "part", has insufficient information and knowledge and no comprehensive overview of trial and evidence, cannot judge any final "meaning" of things.