As a slight aside: the one thing in this whole case that might bring me some personal level of (mild) satisfaction would be if Guede - IMO the only person alive who knows what happened that night, on account of him being the sole murderer - were to read this thread. And if he were to silently and secretly think to himself something along the lines of:
"Hmmmmmmm wow. Those people have pretty much figured out what really happened. I really did do all this alone. I really did come and case the cottage earlier that evening, go away for a kebab, and come back at around 8.30pm. I really did figure out that Romanelli's window was the most viable point of entry, since I could see the exterior shutters were only loosely ajar, since I knew I could climb up to it pretty easily, and since I knew it was a thin single-framed glass that I could break with total ease and an old wooden frame that I could open with total ease.
"I really did climb up and pull open the exterior shutters, then drop back into the shadows for a short while, then I really did go up to the parapet and throw that rock through the window, again retreating back to the shadows for a short while. I then really did climb up again, remove enough additional glass to enable me to reach through and unlatch the window, lift myself up onto the exterior sill (after removing to the side any glass pieces that might have been in my way) and climb in through the now-open window. I then really did pull the exterior shutters closed behind me, to conceal the evidence of the break-in from the outside.
"And I then really did believe I had plenty of time to work, so I stole some juice from the fridge in the house and went to open my bowels before getting down to looking properly for things to steal. I really was then surprised by the return of Kercher just after 9pm. I really did try to sneak out of the front door quietly after Kercher went into her bedroom, but found it unexpectedly locked shut with a key that had been removed. I really was trying to force the door when Kercher heard me and came out to investigate.
"I really did then confront Kercher with my knife in my hand, trying to talk my way out of the situation. But Kercher said she was going to call the police. I really did then become violent, and as I did so, I became sexually aroused, partially owing to my complex psychological problems around women. I really did then force Kercher into compliant submission by threatening to kill her if she tried to fight back, and I started to sexually assault her. She really did react to that by screaming and fighting back, and it was at that point I really did stab her in the neck to silence her (and out of rage at her resistance and her screams).
"And after it was all over, and I'd regained my composure, I really did go and clean my hands, arms and clothing in the small bathroom - removing my shoes and washing blood from my trouser leg(s) in the shower as part of this clean-up, and stepping in the dilute blood/water mix in the tray of the shower then out onto the bathmat, depositing the partial print in the process. I really did then put my shoes back on and return to Kercher's room, then left her room with the intention of exiting via the front door. I really did get as far as the kitchen/living-room area before remembering that the door was locked with a key, so I turned round and went back to Kercher's room to find and obtain her door keys (hence the shoe print pattern in the hall and kitchen/living-room area).
"I really did go through Kercher's handbag (purse) to find her keys, and I took her phones and credit cards when I came across them in her bag too (and I tried to turn both phones off, to avoid them ringing while I had them in my possession - I succeeded with the Italian phone, but could not manage to turn off the UK phone, and made some unintentional calls in the process). Since I now had her keys, I decided to lock her bedroom door too (to delay discovery and buy myself some more time), and I unlocked the front door and escaped as quickly and quietly as possible (pausing outside to re-lock the front door would just have upped the risk of being seen).
"I really did then travel back to my apartment around the outside of the city walls in relative darkness and away from cars and pedestrians in/around Piazza Grimana and Corso Garibaldi. Kercher's UK phone really did ring an incoming message alert as I was walking/jogging round the outside of the walls, which I managed to silence and abort. But I really did then decide that the phones were more of a risk than a benefit, so I threw them into what I thought was the dark undergrowth of the ravine (I was wrong).
"I really did then get back to my apartment, calm myself down, shower properly, package up the clothes I'd been wearing to get rid of them, and decided to "play normal". I had some friends over, then I went into some of the city centre clubs to dance and drink. This really was an attempt on my part to construct some sort of alibi. When Kercher's body was found the following day and the investigation immediately hit an extremely high profile, I really did decide that my best option at that point was just to get out of Perugia and Italy altogether, which is why I took a train to Germany."
Of course, I believe with near-certainty that even if Guede ever did think these thoughts to himself (or something very close to them) silently, he would never, ever admit to the veracity of them to anyone else - either privately or publicly. I think Guede is irrevocably wedded to his (mendacious) version of events now: it minimises his perceived guilt and culpability, which is exactly what he wants. He has already demonstrated on multiple occasions that he truly has no genuine conscience or remorse (even though he pretends to have both those things, as part of the act), and he may well be a genuine psychopath. It would still be marginally satisfying to think that he might silently and privately realise that the truth of what happened in Perugia that night had been figured out, though.......