1) Once again...... the defence does not have to argue for their clients' innocence. They merely have to show reasonable doubt in the prosecution's case for guilt. And I have no idea what you mean by "The computer is just Sollecito's alibi, not an argument for guilt, and these are not arguments on evidence."
2) I have never used Mac OS, so what I'm about to say could be completely irrelevant. But in Windows, the screensaver will kick in regardless of whether an application is running or not. The only thing that activates the screensaver is a lack of human interaction via the mouse/trackpad or keyboard.
3) Since there is a missing page on the image documents of the appeal, we're not even sure whether the screensaver log shows more-or-less constant human activity throughout the whole night up until around 6.30am on the 2nd.
4) Sollecito is not "remembering" anything different after all this time. It's not he who has suddenly said "Oh actually I/we was/were up pretty much all night using the laptop on and off until after 6am". Instead, it appears that the screensaver log is doing all his remembering for him. And if it's accurate, then (as others have said) it's immaterial how patchy and spliffed-out Sollecito's memory of that night may or may not be - the screensaver log provides all the proof he needs.
5) Your assertions that Bongiorno "doesn't believe her client", or that this is a sign of "desperation" by the defence, are curious to say the least. I suspect that Bongiorno, whatever her fallibilities, understands that her job is to get Sollecito acquitted of murder. And if the screensaver log shows that there was frequent human interaction with Sollecito's laptop over the entire period of the murder, I'd say that was pretty good evidence in favour of reasonable doubt for at least Sollecito, and possibly for Knox too.
Guys, I'm able to read the defence documents as much as you are. Maybe a bit better, since they're written in my language.
The "defence has not to bring arguments" is maybe true in a pure common law adversarial system. There is complete mistake on this whole point of understanding of some basics of the inquisitorial aspects of the system, I understand that a great portion of reasoning from some innocentisti are based on their wrong ideas, or projection, abput how basics of a justice system shall work . The fact that LondonJohn has no idea of what means "
The computer is just Sollecito's alibi, not an argument for guilt, and these are not arguments on evidence", has key implications on his conclusions.
Yesterday I happend to talk with Clander, another Italian poster on PMF, and we discused at lenght about the computer evidence (he is a programmer). I also have a very close friend who is a system engineer and we had talked too. I consider myself quite skilled in computer and I just found confirmation of the same conclusion I had at the time when I studied Bongiorno's argument. There are several kinds applications capable to automatically disable the screensaver as long as they are left open, some of those have default setting with this option (versions of VLC have this as default). But there are really many applications capable to prevent the screensaver from running. Who says "the only thing that activates the screensaver is a lack of human interaction via the mouse/trackpad or keyboard" must really upgrade their knowledge.
Log files and system records are by definition a potentiallly unreliable source. A good professional may be able to alter the system memory and create memory of fictitious activity non-detectable through Encasa ot other software, and traces of activities can be easilly cancelled from the system.
The actually non modifiable data is the internet record of processor ports activity, which is stored by providers. This activity shall be always considered as a starting datum and first clue. The activity on the port for internet human activity - port80 - is zero in Sollecito's machine during those night time period.
I didn't see there was any missing page in the 9 pages snippet, the topic reads through as continuous, I will check again, but anyway, in those reported documents there is nothing different than in the appeal. You may imagine there is a sound evidence that demonstrates human activiy, in a missing page not published by TGCOM site. In the vidible pages, the arguments appear well unfold in their weakness.
For those who don't understand the problem in the outcome with Bongiorno's argument, there is not much I can do. The judges will understand, though.
The logical implications of Sollecito's computer records remain the following:
1. There is evidence Sollecito lied, or better that either Amanda or Sollecito (or both) lied about their alibies. This evidence is not refuted by Bongiorno's agruments.
(Whether people like this or not, this lying
has implications in the rules of the game of the Italian trial)
2. The computer records don't provide any alibi and the defensive arguments don't support and don't prove their alibies.
The only meaning of computer records in this trial is about the
argument made by the defence, and is related to their capability to support Sollecito's alibi. They are useless for any other purpose. Bongiorno and Maori merely repeat the records are not enough a proof for Massei's theory, but this is a different scope. Their only possible function in reality is to defend Sollecito's alibi: once they fail in this duty, they are not relevant in the trial any more and thus all logical reasonings about them (like about the 500 files later modified) will be devoid of consequence and won't play any role.