The two prosecutors in the case, Giuliano Mignini and Manuela Comodi, made a number of objections when they cross-questioned Pasquali, who admitted that he had not taken into account the fact that there were shutters on the outside of the original window.
Prosecution witnesses have testified that the shutters were partially closed on the morning after the murder, and Pasquali conceded that the closed shutters would have prevented a rock from the breaking the window from the outside.
"It does not take a technician," Pasquali said. "If the shutters were ajar then the rock couldn't fit through."
The combined defense teams of Sollecito and Knox have attempted to show in recent hearings that the vicious murder of Kercher was committed by one person -- Guede -- who killed Kercher when she caught him stealing.
Witnesses in recent hearings have said they were robbed and threatened by Guede just weeks before Kercher was killed.
One witness said his office window had been broken with a large rock, and a computer stolen. The computer and a cell phone were later found in the possession of Guede, who was also found with a switchblade.
Another witness said Guede pulled a knife on him when he caught Guede in his house rummaging through his things.
Knox was in court today, as she has been for every hearing since the trial began, and during a break she graciously accepted a chocolate from Sollecito, thanking him out loud. It is reportedly the second time he has given her a chocolate.
Knox's younger sister, Deanna, 20, appeared in court for the first time on Friday, along with Knox's mother, Edda Mellas, who has been attending hearings in Perugia since she testified June 19. Deanna Knox had been to Perugia and visited Knox in jail, but she had not returned since the trial started in January.
Knox's family has been by her side continually since her arrest, with members taking turns staying in Perugia.
Knox's half-sister Ashley, 13, also came to court Friday morning but was asked to leave by the judge, because she is a minor.
Knox smiled at her sister and a friend from Seattle, Madison Paxton, who testified last week. Knox showed them her biceps, as if to say, "I'm strong."
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