But this is no argument. It is obvious to anyone in Italy that this is irrelevant. Here the OJ rule doesn't apply, nor the Clinton "sex" perjury charge applies. This "lie" does not imply anything.
In order to accuse Stefanoni of cheating and dismiss her evidence, you have to accuse her to lie about something relevant in the body of evidence. The Qbit/PCR method of quantization is obviously not relevant. Because it is an entirely legitimate protocol, there are negative controls, the profiles obtained are authentic, the documentation was not altered, the defence experts were invited to assist.
It is just wrong to think that because she "lied" in a preliminary hearing about a technical matter, this implies that the evidence is invalid. She did not bring the information about quantification methods to the preliminary hearing, maybe because the prosecution did not want this to be discussed preliminarly. Is there a procedural flaw? I don't know, but not of such kind to nullify the trial. Did Stefanoni "lie"? I don't know. I have no proof: presumption of innocence, she didn't lie maliciously, she didn't lie. Even in the abstrace case that she lied, does this cause a relevant change in the data? No. Is the topic of quantification relevant as it is discussed now, in the assessment about the reliability of the knife DNA? Yes, it's a reasonable topic, and when it was the time to discuss it, in fact the data was entirely disclosed. Everything is ok, to me. Whether she was "malicious" or not in the preliminary hearing makes no difference to me. It is irrelevant. This is no argument for innocence.