otg
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I had thought I would go next to narrowing down the size of the cylinder that I believe could have caused the shape and size of the depressed fracture. But I think instead (maybe to wrap up my case for why I think it was a cylinder, or maybe because some have already speculated on the 8 long crack in her skull), Ill go on first to the linear fracture.
When I started down this road, it was mostly because of the realization that the depressed fracture was an almost perfectly shaped oval, rather than the rectangle that Dr. Meyer wrote in the AR. (As wengr pointed out, its not just an oval, but its actually an ellipse as close as we can tell from the only photo we have of it -- the differences being a little more technical than most here probably want to discuss. But we can talk about that later.) I wasnt thinking about the linear crack and how it might have occurred, or why the good doctor thought he saw a rectangular hole. But when I started thinking about it, I realized why the linear crack happened. Ask yourself, what kind of force would be necessary to cause the skull to crack open with the crack (fracture line) radiating outwardly from the hole as it did.
Several posters (on one forum or the other) have already referred to head injuries that they, or someone in their family, had at one time or another. As I recall, they all mentioned that they might have had enough force to cause a fracture, but no one had a depressed fracture that resulted in brain damage or death. While this is anecdotal, it speaks to the fact that it takes much more force to cause this type of fracture than a linear fracture, which usually does not require treatment by a doctor. In fact, sometimes a fracture (or even a hairline fracture) may have occurred, but since no serious complications develop, it is not even known that the fracture was there. The human body is an amazing creation, and it is constantly working to repair and heal injuries on its own. Unless there is damage to the brain or underlying membranes or vasculature, the bone itself will heal.
So why or how, in this case, did the object that caused the depressed fracture also cause the linear fracture?
Okay, its time for another video to illustrate what I believe happened. This one includes another experiment with food, and then an animation I put together showing from three different angles the forces involved in the head blow. I should mention that in the first segment of the animation, you'll have to imagine that you can see through the cylindrical object. Just for the record (and especially for BOESP), I havent yet ruled out the possibility that the cylindrical shape is stationary and JonBenet was shoved, or her head pushed into what caused the fracture. Either way, I believe the result would be the same. (We can get into that later.) The point up to here is that whatever caused the fracture was cylindrically shaped where it came in contact with her skull, and it caused both the depressed and the linear fractures.
[ame="http://www.youtube.com/watch?v=eP1vZhTIRtE"]Depressed Fracture Forces - YouTube[/ame]
When I started down this road, it was mostly because of the realization that the depressed fracture was an almost perfectly shaped oval, rather than the rectangle that Dr. Meyer wrote in the AR. (As wengr pointed out, its not just an oval, but its actually an ellipse as close as we can tell from the only photo we have of it -- the differences being a little more technical than most here probably want to discuss. But we can talk about that later.) I wasnt thinking about the linear crack and how it might have occurred, or why the good doctor thought he saw a rectangular hole. But when I started thinking about it, I realized why the linear crack happened. Ask yourself, what kind of force would be necessary to cause the skull to crack open with the crack (fracture line) radiating outwardly from the hole as it did.
Several posters (on one forum or the other) have already referred to head injuries that they, or someone in their family, had at one time or another. As I recall, they all mentioned that they might have had enough force to cause a fracture, but no one had a depressed fracture that resulted in brain damage or death. While this is anecdotal, it speaks to the fact that it takes much more force to cause this type of fracture than a linear fracture, which usually does not require treatment by a doctor. In fact, sometimes a fracture (or even a hairline fracture) may have occurred, but since no serious complications develop, it is not even known that the fracture was there. The human body is an amazing creation, and it is constantly working to repair and heal injuries on its own. Unless there is damage to the brain or underlying membranes or vasculature, the bone itself will heal.
So why or how, in this case, did the object that caused the depressed fracture also cause the linear fracture?
Okay, its time for another video to illustrate what I believe happened. This one includes another experiment with food, and then an animation I put together showing from three different angles the forces involved in the head blow. I should mention that in the first segment of the animation, you'll have to imagine that you can see through the cylindrical object. Just for the record (and especially for BOESP), I havent yet ruled out the possibility that the cylindrical shape is stationary and JonBenet was shoved, or her head pushed into what caused the fracture. Either way, I believe the result would be the same. (We can get into that later.) The point up to here is that whatever caused the fracture was cylindrically shaped where it came in contact with her skull, and it caused both the depressed and the linear fractures.
[ame="http://www.youtube.com/watch?v=eP1vZhTIRtE"]Depressed Fracture Forces - YouTube[/ame]