That's a good point. Heck, it might lead investigators to other crimes that were never solved.
Not outside the realm of possibility, but it assumes the real murderer is out there talking to others. I doubt that very much.
Every hard fact made public about the killing of JonBenet suggests it was done by someone with pretty intimate knowledge of the Ramseys. If not a family member, then someone close to them. If, however, despite the known evidence pointing in the other direction, her killer picked her pretty much at random, then it suggests someone who is a likely sexual serial killer. Her killer had 10 years to do similar killings again and again, yet no comparable killing has taken place anywhere else as far as we know.
In the long history of such crimes, sexual psycopaths are not known to stop at one killing unless something intervenes (such as their death or incarceration for an unrelated crime).
Yes, children have been abducted, raped and killed in the past 10 years. In nearly all of the cases the media has raised to high profile, the killer was eventually caught. And there has never been another case like the Ramsey case, where the child was garrotted in addition to being bludgeoned, accompanied by the other ritualistic things the killer did to that child. Sexual psychopath killers tend to not only kill multiple times, but also tend to repeat their rituals, even if they change the weapon of choice.
The idea that a sexual psychopath would have killed one child 10 years ago and not had the driving need to kill again is ludicrous. Karr has been free and able to go wherever he wished these past 10 years. To the best of anyone's knowledge, so far, he has not even remotely been connected with any child murder anywhere until now.
So if Karr did kill JonBenet, then he very well may be a unique murderer in the annals of sexual psychopath murderers.
A reporter on scene on Paula Zahn's show, CNN, just said that they know that there was a Christmas party at the Ramseys on Dec. 23, 1996, and that Karr has said he went to a Christmas party at the Ramseys and met JonBenet and gained her trust.
And that on the day of the murder, he let himself in the house by way of a storm window that he had earlier left unlocked, and that he spent 5 hours in the house while the family was gone to the Christmas party away from the house.
I'm not saying this is correct about a Dec. 23 Christmas party at the Ramseys...I'm saying that CNN has reported on the air that they KNOW such an event occurred, and it was at this event that Karr claims to have first met JonBenet and first been in the house and left a window unlocked to get back in later.