Intriguing,
The complicating factor in this case is the staging. It can be, and is, confused with bona fide forensic evidence.
This is why there are so many RDI theories. When in reality there should only be three.
If you accept the above then its easy to see how particular theories can be arrived at, yet be false.
All three assumptions might be correct, but your conclusion false, because the existence of Burke's knife does not prove he was present at the staged crime-scene. Someone else, for any other reason, might have used the knife, potentially manufacturing restraints?
ITA. This is staging, plain and simple.
This is where the staging kicks in. Its hiding or masking what really took place, with you filling in with your theory.
Here is something controversial. Nearly everyone, icluding Kolar, is saying the BDI happened down in the basement.
I do not think so. Why? Because JonBenet was relocated, from the primary crime-scene to the wine-cellar, specifically to hide where it all began.
Both parents were fully involved in the staging, and depending on how you view the bloodstains on JonBenet's body and clothing, you can make assumptions about who did what when, e.g. JR wiped JonBenet down, his fibers are on her crotch, this might have preceded any redressing in the size-12's?
Patsy's fibers are embedded into the knotting of the garrot, they are on the underside of the duct-tape, placed over JonBenet's mouth, and to be found in the paint-tote, whch of course is outside of the wine-cellar. These fiber instances leave no room for doubt that they arrived upon JonBenet by chance.
There is blood from JonBenet on the Barbie Nightgown and on a pillow in her bedroom.
This suggests to me that prior to being taken down to the basement JonBenet was lying on her own bed, in her bedroom?
What transpired, depends on your theory. If its BDI, could Burke have attempted to stage JonBenet in her own bedroom, e.g. it might have all started in his bedroom?
Someone, at some point thought the best staging would be if JonBenet was found dead in her own bed, the victim of a viscious sexual assault.
For some reason this was changed, JonBenet was redressed and made to appear as if she had just been taken from her bed, and the parents version of events corroborates this.
So stuff associated with the bedroom staging was dumped into the wine-cellar along with JonBenet.
Doing all this would remove suspicious objects from her bedroom, e.g. partially opened Christmas Gifts, Barbie Nightgown, and the Barbie Doll. All of the latter play into a BDI or PDI.
So the R's have created the illusion that JonBenet has been kidnapped. Between the two versions, in theory, no extra time has been purchased. In the bedroom staging, JonBenet will be found immediately, and the R's will become prime suspects, in the second wine-cellar staging, its just the time for the canine squad or standard house search teams to find the body, which might have been half an hour or so. So the R's expected JonBenet to be found quickly in both cases.
The difference is that in the wine-cellar staging, there is no obvious sexual assault, and IDI is in your face, as promoted by Lou Smit.
So the body had to be moved so to accomodate the fact that she had been kidnapped, and to hide her from view.
Here are a few observations. JonBenet was whacked on the head and strangled, why so? Why not whack her again until she is dead?
The flashlight: Was removed from the staged bedroom crime-scene and and someone else wiped it clean. This can mean only one of two things: non-ramsey fingerprints are on the batteries, or that an R changed the batteries when they ran out half way through the night?
It could be that the head bash is part of the bedroom staging, and its failure to be visually obvious, contributed towards the decision to stage an abduction?
JonBenet's death is a sexual assault gone wrong, and the wine-cellar as a staged coverup.
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The fiber evidence is meaningless. You don't know how the fibers got there.
W/o doubt PR was wearing the red jacket the night of the 25th, and w/o doubt had contact with JBR. The fibers easily could have transfered, by primary transfer, from PR to JBR, then the killer could have transferred them, secondarily, to the tote, garrotte, etc. Or it could be a combination, since it's PR"s tote, she could have made an innocent primary transfer to the tote prior to LHP taking it to the basement on the 22nd. The tote, a container, would not have transferred
fibers unless someone put their hands in the tote.
We have no way at all to determine how the fibers got on the various objects.
Fibers are lost at an exponential rate, under normal circumstances. Dead body's however do not loose fibers so quickly because they are not in motion. If we knew the number of fibers, we might make an educated guess. We might be able to say the number is more or less likely to be from primary transfer. Or, if we knew the number of fibers in other areas of the house, we might compare and say the number of fibers near the WC was X times greater therefore most likely primary transfer. But we have no baseline. We don't know what a "large" or "small" number of fibers is. The jacket to my knowledge has not been tested for fiber shedding under simulated activity (activity one might suspect PR of)
It certainly could be that the fibers are near the WC and on the garrotte because PR was there doing evil deeds. OTOH, it could simply be secondary transfer from JBs body to the other objects.
There is no way to determine which it is. Any choice is arbitrary and capricious. Might just as well forget the fibers, and try to solve the crime with meaningful evidence.