Although, csi team made an assumption as how the boy was killed, meaning, if he was hit on the head with multiple blows, this doesn't determine the position of the person, as exactly where he was standing or in which position he was standing. Here, two possibilities could be assumed. One, like the above comment says, the kid hitting his brother with the pipe, was facing him in a horizontal position at an altitude described by the blood spatters on the T-shirt. and second, it doesn't determine anything about the position of how the boy, who was sleeping, was in. It simply cannot be assumed, during all those blows, he would not have moved at all. or the boy, after hitting the victim might have moved him back to his original state, he was in, so no one would suspect it. It just said that the father found him in the morning when he went to wake him up. The csi, just did an analysis as who, among the three assumed suspects could be the actual culprit, but not the position of the threads of the pipe on the victim's body. because, that would not give any clue. Imagine this, if the boy was hitting him with one hand, his blows could be vertical as well. but if he is using both his hands, then the blows would be horizontal, or diagonal.
Review of Compulsion
