If this 'logic' hadn't actually become reality until M/B overturned it, this would be hysterical. Mach speaks of the PIP ignoring facts while the PGP is faithful to them. But let's look at the facts;
- The clasp is seen on day 1 of the investigation. This is clearly a sexual assault and here is a severed piece of bra clasp. It is, nonetheless, not collected.
- 46 days later, after numerous visits to the cottage and the complete undoing of the bedroom, the clasp is located in a different location. The SP now decide to collect it, but in doing so they violate numerous protocols;
(1) They collect it using visibly dirty gloves
(2) They rub the very metal hook where the DNA is found using the same dirty glove.
(3) They pass it around among the technicians there as if they can eyeball anything relevant in doing so.
(4) They put the clasp back down on the ground to photograph it.
(5) They only test the sample once.
(6) They improperly store the clasp, allowing it to rust and render it useless for further testing.
The court claims there is no source of Sollecito DNA that could have resulted in a transfer but they ignore the fact the exterior side of Meredith's bedroom door/frame/handle were never tested for DNA because (to paraphrase) the crime took place on the other side of the door. Clearly Sollecito's DNA had to be there since he had tried to break down and enter the room.
For all these reasons, and because other male contributors are detected, C&V rules the results unreliable. Hellmann agrees.
1. The fact that other alleles are found on the clasp cannot be a logical reason from which one could infer anything about the way Sollecito's DNA was on it. This is because of what Halkides called "the first axiom of DNA science": nothing about date and means of transfer of the DNA can be inferred from the presence of the DNA itself.
The extra alleles themselves do not tell anything about the way they have come on the item, and they cannot provide any information about how Sollecito's DNA came on it. Absolutely zero.
2. C&V cannot "rule" anything, while Hellmann's decision was definitively ruled illogical and null.
3. The external side of the door seems to be the area of interst (of speculation) by the defence. However the fact that Sollecito tried to kick down the door (allegedly "tried") itself may not provide a reasonable probability that a massive amount of Sollecito's DNA would stick on the external side of the door - or that any amount of it would.
I assume Sollecito did not spent time licking areas of the door surface.
In fact the problem is about the intrinsic extreme improbability of tertiary transfer, which is something that calls into play conditions that are intrinsically improbable: according to experiments requires conditions of presence of wet biological fluids or wet surface and only happens within the framework of a structured interaction between very small areas, of which one already has an abundant DNA presence - it could be detected
sometimes only in cases where you already know that there has been a contact with some speific very small (square centimeters) area where it was already known there was DNA, under wet conditions, and in those extreme low probability conditions it still happens in a minority of cases.
In this case we don't even know if there was Sollecito's DNA on the external surface of the door, there is no reason to assume that there had to be DNA on the door, to think that the forensic's glove ever touched the door (which had been disassembled by that day btw), even less we have a reason to expect that this immaginary touch would have occurred on that specific square centimeter where Sollecito had left his hypothetical DNA, and even less we could assume that the hypothetical biological material in those conditions after 46 days could be "wet" that is in transferable conditions.
There is also no reason to expect this kind of alleged contamination with any degree of frequency, given if this type of transfer was frequent we should have found quite a number of other instances, not only of Sollecito around the apartment but also of Amanda Knox inside the murder room.
4. The SC anyway cannot assess this topic. They have no legal power and no mean to do it. Direct assessment of this matter is exclusive competence of courts of merits.
Let's not forget, anyway, that the bra claps is only a piece of circumstantial evidence. Sollecito had a number of other pieces of evidence against him, and evidence has to be assessed altogether.
And also, consider that the evidence against Knox adds itself to the evidence against Sollecito.
Then we have the Luminol traces.. ones that test negative for blood using TMB and negative for Meredith's DNA, but what does Nenini rule? ... there was a lot of blood in Meredith's room, which is in close proximity to where the traces were found, so what else could these traces be from? They argue if you can't prove what non-blood agent caused the results then we must accept they were made from Meredith's blood, completely disregarding the indisputable evidence that proves it can't be her blood.
Nencini is absolutely correct. The (alleged) TMB negatives itself do not reduce at all the probabilities that luminol traces are blood, due to the properties of TMB and luminol (there is no known alternative substance that reacts to luminol but not to TMB, even less a plausible substance, they have the same false positives while luminol is more sensitive and more specific than TMB).
There is in fact no plausible alternative substance at all to explain the bare feet prints, no plausible alternative dynamic, and there are even other bare foot prints on the scene that are proven to be in diluted blood and to be related to the murder (but not showing to be related to Rudy Guede).