Didn't Raffaele tell the police that he couldn't be 100% certain that Amanda didn't leave during the night because he was asleep there therefore wouldn't know that she left and then later returned?
Up pops the mole... one of the silliest ones, in fact.
Do you customarily chain your partner to the bed at night? Do you have a time lock installed on the only means of exiting your bedroom? If you do then perhaps I can understand your confusion since you are unused to what I believe to be far more common situations in which people sleep in the same bed without these precautions, and hence it's possible for one or the other person to get up without the other noticing.
A moment's thought would show that this "devastating admission" the guilters on other forums lovingly drool over is just common sense.
It's also irrelevant since Raffaele never claimed to be asleep at the actual time of death, which is almost certainly 21:00-21:30.
This is a poor talking point.
It's a hard fact that the defense made this claim. It's not a hard fact that the computer was used by a human being sporadically throughout the night. That is yet to be proved.
Wasn't I just mocking this exact manoeuvre, the temporary and convenient adoption of the irrationalist position that nothing is true unless and until a Perugia court makes it true?
Wasn't I just pointing out that the people who employ this manoeuvre will also gladly drag in all sorts of claims which have not been validated by a court in Perugia when it suits them, indicating that this insistence on the official stamp of the Perugia court system is nothing but an argument of convenience used to dismiss inconvenient facts?
Even if the defense's claim is proven correct it only hurts, not helps them. Human interaction does nothing to back up Amanda's alibi and just makes them both look like liars. How come neither of them brought this up to the police, or their lawyers during questioning or at the trial? Seems like a pretty important fact to leave out. Amanda is a chatty woman, yet nothing about an all night computer session or Japanese animation in her alibi e-mail or trial testimony.
So they either lied about being asleep during the night, or (he at least) is lying about being on the computer. Which is it?
I do wonder where you get your "facts".
They have claimed from the start that they were at home watching videos and listening to music all night, and the details of the error logs match the details of what Raffaele claimed he was doing and when he was doing it.
Even if they had not - I'll pretend for a moment that the guilter echo-chamber got something factual right for once - they still can't have murdered Meredith Kercher if they weren't there. It doesn't matter if they told the police that on the night of the murder they were in Tibet having a three-way with Santa Claus if they couldn't possibly have been there when Meredith died.
EDIT: Also, why would Raffaele want to stay up all night on the computer when they had plans to go on a day trip the next morning? And they were planning to leave in the morning, Amanda mentioned it (the word morning) twice in her trial testimony.
This is not a sensible argument. Which is more unlikely, that a twenty-three year old nerd would stay up too late mucking about on his computer, or that two university students with absolutely no history of violent, antisocial behaviour would team up with a local crook they don't know to brutally sexually assault and murder a friend for no reason, in such a fashion as to leave almost no evidence at all at the scene?
Expressing overblown incredulity about acts which are mundane to mildly unusual does not justify leaping to a conclusion which is wildly unlikely to impossible.