Then what innocent explnation do you give for Amanda's DNA mixed with Meredith's blood in four different instances in the house?
And the police saying she buckled means she was brought down from her lying evasiveness "I can't remember"s and told a credible account, i.e. that she was present.
There is no mention of coercion in the policeman's statement.
No. Let's look once again - slowly - at what Perugia Police Chief Arturo de Felice said to newspaper reporters on the 6th or 7th November 2007:
"Initially the American (Knox) gave a version of events we knew was not correct. She buckled and made an admission of facts we knew were correct and from that we were able to bring them all in."
Focus on the following word constructions:
"...version of events we knew was not correct"
"..buckled.."
"...facts we knew were correct"
What de Felici is saying here is that BEFORE Knox started her interrogation (supposedly as a witness, incidentally!!) on the late night of the 5th November, the Police "knew" that she had been lying about spending the whole evening/night at Sollecito's apartment. Furthermore, de Felici is also saying that BEFORE Knox started this interrogation, the Police "knew" that she had met up with Lumumba (or, at the very least, with the as-yet-unknown recipient of the text message - although I believe the Police already knew this was Lumumba).
And the word "buckled" is a very interesting one - notwithstanding translation issues. It clearly implies that Knox was placed under pressure. People (or steel bars or bridges) do not "buckle" unless they are placed under high stresses. It's therefore very instructive that de Felice did not say anything like: "Knox suddenly changed her story". He said she "buckled".
With all this in mind, I would argue that it's virtually impossible to conclude anything but the following from de Felice's telling statement of the 6th/7th November:
1) The police went into the Knox interrogation of the night of the 5th/6th November "knowing" that she had been lying to them about spending the evening/night of the 1st at Sollecito's apartment.
2) The reason why they "knew" she was lying is that they "knew" that Knox had instead met up with the recipient of the "see you later" text message - whom I believe the police had already identified as Lumumba.
3) The police went into that interrogation "knowing" that since Knox had - in their eyes - lied about her movements and meetings on the night of the 1st, she must have been lying to cover her involvement in the murder.
4) The police therefore went into that interrogation "knowing" that Knox and the text message recipient (Lumumba) had met up on the night of the 1st and had and gone to the cottage, where one or both of them killed Meredith.
5) If 1-4 are correct, it's impossible to disregard the strong suspicion that the police confronted Knox in that interrogation (she was "still a witness", remember!!!), told her that they had proof she had lied to them about her whereabouts and actions on the night of the 1st, and told her to "come clean" and tell them "what really happened" - which they already, of course, "knew".
6) The police then apparently told Knox that she could have had a mental blackout during these high-trauma events, but that she had to force herself to remember them. The police interpreter herself apparently admits that she told Knox this was a documented phenomenon, and that Knox should try to remember (in complete breach of her position as an interpreter).
7) The police very likely suggested to Knox that "perhaps" she wasn't directly involved in the murder - probably to make it easier for her to "remember". I believe that she may even have been explicitly asked to imagine that she was covering her ears to block out the screams.
8) Knox then "buckled" and agreed with the scenario which the police "knew" to be correct - that she and Lumumba had met up that night and gone to the cottage, where Lumumba had forced himself on Meredith and killed her, while Knox cowered in the kitchen and covered her ears.
Of equal interest is that de Felici bragged to reporters at the same time as making this "we knew" statement that the inquiry into Meredith's murder was "concluded":
http://www.timesonline.co.uk/tol/news/world/europe/article2821154.ece
This was on the 6th/7th November, remember - before the police had any forensic results back, and before they had properly investigated their suspects. Indeed, they subsequently released one of the three whom they "knew" was involved in this "concluded" case - Lumumba - when he lucked out with a cast-iron alibi from an unimpeachable university professor.
Astonishing. Truly astonishing.