What security tapes? I believe I read where there were no security tapes available for the specific time frames of the alleged sitings, because they had been taped over. I find that incredible, given the sensitivity nationwide, post 9/11. But there you have it.
From my recollection, there is 1 piece of tangible evidence that is said to be conclusive regarding Caylee's death...the single strand of hair. I think that is arguable in court.
The other evidence is the smell in the car. The body farm did air testing for chemical compostion of the "smell". Please bear in mind that "smells" in the air are not as positive proof as smells from a "stain" or specific spot that can be further analyzed. So far, I haven't read where the stain in the trunk had been identified.
Look...the odds are that Caylee is dead. But who wants to close a case based upon odds when there is a chance, however slight, that a little girl is "out there".
My favorite fantasy about this case is that Casey gave Caylee to someone, mainly to gain freedom from the burdens of motherhood and from the constraints of her family. If a person exists who has Caylee and is secretly adopting her, there may well be a mandatory time period that has to pass without challenge. If Casey is indeed as spiteful as she appears, she would rather stay in jail than risk her parents winning full custody from an adoptive family.
Casey Anthony may indeed despise her parents more than most of the people here.