As someone who has made a living investigating crime scenes, who has spent more years than I want to remember in college and taking courses in forensics to do this, I can tell you the note, as it is, while an investigational tool is basically worthless.
Give me a note that is typewritten that can be microscopically matched to a printer/typewriter available to the perp. Give me microscopic fibers/hairs on the note that can conclusively matched to the perp. Give me fingerprints/palm prints to match. This note contained none of the above. Instead, you have people who determine that the writing may or may not belong to the person thought to have written it. An inexact science.
In fact, A&E was able to hire a handwriting analyst who conclusively ruled Patsy Ramsey out as the writer of the note.
We have "experts" who claim the note was written by her because of certain phrases and word connection that are uncommon used by Patsy Ramsey in other writings. Specifically the use of the word "hence". Yet what these experts can not or refuse to discuss, is why a notepad said to be from the home and previously used, contained no prints or biological evidence, including on the corners of the pad. Why no pen in the home could by matched to the ink used in the note. Give me science any day over someones speculation on who may have written a note.
Now let's look at the other evidence. Nine months after JonBenet was murdered another young girl, given the name of "Amy" to protect her, was sexually abused in her bedroom. Amy lived close to the Ramseys, was in the same dance class as JonBenet and the police believe these two cases are connected. The police believe in the case of Amy an intruder broke into the home and hid hours prior to the attack and waited until the family was asleep to molest Amy. A scenario now believed to be the same as the Ramsey case.
In 2003, the new DA of Boulder issued a written statement to a federal judge in Atlanta that the evidence in the Ramsey case pointed to an intruder committing the crime and vowed to investigate this scenario using old evidence previously overlooked and using investigators from the original case.
Now, from two small blood stains on JonBenets underwear, the Colorado forensic lab was able to extract a full genetic profile that matched no one in the home, including the Ramsey family. It is also known that at the time of the JonBenet murder and the rape of "Amy" 38 registered sex-offenders lived within the area of the Ramsey's. Investigators are currently trying to track down each of those sex offenders to gather a DNA sample to include or exclude them as the killer.
I would venture a educated guess that this case will finally be solved by DNA. The killer of JonBenet will eventually screw up, will eventually have his genetic profile put into CODIS where a match will be found. In fact, "cold" cases going back 20-30 years have been solved this way.
I have to look at what investigators who have been and are currently working on the Ramsey case are saying, including the DA in Boulder assigned to the case. They have ruled the Ramseys out as the murders of JonBenet. A sticky little fact that people do not want to admit.
These investigators have evidence that we know nothing about, have scientific reports that have never been released and evidence found at the scene that has never been brought out in public. Unless they have forensic information from the ransom note that has not been released (not very probable if it matched Patsy) they are not focusing on the note given the large amount of other evidence they have to work with that will conclusively show who killed her.
Expecially as this is an unusual situation. I know some people who have worked on forgeries where one wants to prove that two documents were not written by the same person; that's an easier question. The note in this case asks the opposite question.
I believe you are correct
However I hope it doesn't take 20-30 years, so that at least John will be alive to see the killer face justice
R.I.P Patsy