A psychopathic pedophile would have had no reason to write a ransom note. Someone intending to kidnap JonBenet would have prepared his ransom note in advance, not written it on paper from a notepad he happened to find in the house. And he would actually have kidnapped his victim. Someone out to get John Ramsey would have had no reason to write a ransom note, and if he'd wanted to leave a note would have prepared it in advance. Someone intending to frame the Ramseys would have attempted to forge John or Patsy's hand, but none of the many "experts" who've examined the note has ever suggested it was a forgery. Someone entering the house via the basement window would have left clear signs of his presence there, yet there was no sign anyone had even lifted the grate over the window well or passed through the narrow window sill. And someone with a key would have had no reason to break the basement window, displace debris from the well onto the basement floor or position a suitcase under that window. Thus no intruder theory makes sense.
Patsy Ramsey had no motive to intentionally murder the daughter she doted on so intensely. If she struck her daughter accidentally or in a spontaneous fit of rage, there would have been no reason for her not to immediately call 911, claiming she fell by accident and struck her head. The same would be true if, as has sometimes been speculated, she and John were having a spat, someone struck a blow and JonBenet got caught in the middle. This could still have been reported as an accident. Since the head blow resulted in no external injuries and, according to the judgement of most forensic specialists, she would still have been breathing, there would have been no reason not to call for help and certainly no reason to finish her off by strangling her.
If Patsy had attempted to stage a kidnapping by writing a phony "ransom" note, she would not have called 911 so early the following morning, knowing the body of her victim was still in the house, thus negating the entire point of her staged kidnapping.
If John Ramsey knew that his wife had killed his child, by accident or whatever other reason, it's very hard to understand why he would have decided to support her in an effort to cover up the truth. And if Patsy had known that John had killed her, then once again it's impossible to understand why she would have decided to cover for him instead of leaving the house immediately, reporting him, and suing him for every penny he owned. Moreover, if the two of them were involved in a conspiracy they could easily have agreed on a story to tell and there would have been no reason to delay full cooperation with the police.
Thus the widely held theory that Patsy Ramsey killed her daughter makes little sense. Nor is there any reason to believe she was involved in the plan to stage a kidnapping nor, indeed, in any aspect of the crime.
If Burke Ramsey had struck his sister in a rage over pineapple fueled by sibling rivalry, or any other motive, then, once again, there would have been no reason for his parents to stage a kidnapping rather than immediately calling 911 to report an accident. Once again, as stated above, since the head blow resulted in no external injuries and, according to the judgement of most forensic specialists, she would still have been breathing, there would have been no reason not to call for help and certainly no reason for either parent to penetrate her vagina and finish her off by strangling her. And if one might want to assume that Burke is the one who penetrated her vagina and constructed the "garrote" that strangled her, then it's impossible to believe his parents would have gone to such great lengths and taken such a huge risk to protect the person who had so violently assaulted their own dearly beloved child, even if it were their own son. Under such circumstances, John Ramsey, an experienced businessman, would have immediately called his lawyer - and learned that Burke could not have been charged with murder in any case, as he was too young to formulate intent. When we add to the above, the extreme unlikelihood that a frail nine year old boy who had expressed no interest in girls and had no history of violence would be capable of sexually assaulting and strangling his little sister, it becomes very hard indeed to argue for Burke as the killer. Indeed, there is NO evidence he was involved in any way -- though it's possible he knows more about what happened then he's ever admitted publicly.
Which leaves us, by process of elimination, with only one remaining suspect: John Ramsey. If, as suggested by practically every expert who has ever reviewed the forensic evidence, JonBenet had been sexually molested in the past, then the most likely candidate by far would be her father. And if this were indeed the case, then John's motive would not be difficult to discern: the need to forever silence someone who could have destroyed him by revealing what he'd been up to. Once deciding that he had no choice but to kill her, John could have struck her over the head, thus "mercifully" sparing her any pain. Though the reason for the use of the garrote-like device is not clear, it could have been part of an erotic fantasy, or else possibly an attempt to stage an assault by a violent intruder. If John had murdered his daughter there would certainly have been no reason for him to share this information with his wife, so the notion that the two of them were "in it together" makes little sense. In this light, the reason for the "ransom" note becomes clear. It was written, in part, to frighten Patsy into not calling the police, thus buying time for him to dump the body of his little victim under cover of darkness the following night. It was written also to provide him with an alibi if his car had been spotted near the location where the body would later be found -- he could claim he'd been delivering the ransom. There are of course many questions that arise regarding what sort of plan John had in mind, and how he could have carried it out, but it's possible to account for literally all such questions, as has been demonstrated on this blog.
[Oh, and in case you're wondering why John could not have called 911 right away and reported the head blow as an accident: 1. he'd have needed to explain why he'd been up with JonBenet in the middle of the night; 2. he'd have needed to explain the injuries he'd inflicted on her vagina during the sexual assault that most likely preceded the head blow; 3. he might have noticed the blow was not fatal, as she'd still been breathing, and been concerned that she might be revived to reveal what had happened.]
An intruder can be eliminated for the reasons provided above. Patsy Ramsey can be eliminated for the reasons provided above. Burke Ramsey can be eliminated for the reasons provided above. John Ramsey cannot be eliminated.
I rest my case.
NB: If anyone has trouble posting a comment, email it to doktorgosh (at) live.com, and I'll post it for you.