Norton's Theories:
1. Casey is a narcissistic child who grew tired of her favorite toy. Like generations of children, she simply dumped it in favor of something else - too bad the toy was a living being.
2. The judge screwed up by allowing the defense to define "reasonable doubt", the definition Foghorn Leghorn gave to the jury of Casey's (brain damaged) peers was way, way, too restrictive. The judge was responsible for assuring that the jury understood both circumstantial evidence and reasonable doubt, I did not see him come close to that prior to retiring them to deliberate the verdict.
3. Everyone seems hung up over murder although it was only one of the three alternatives the jury rejected. Manslaughter and child abuse were lesser included charges and either one would have stood on the evidence presented.
4. The jury simply did not want to convict, I've no idea why and expect that there were multiple reasons. The insignificant amount of time spent in deliberations and haste in using the grandfather as an excuse both point to that conclusion.
5. Mama Anthony is as willing a liar as her daughter and should be tried and convicted of perjury and obstruction of justice.
6. My nearly life long distrust of the justice system remains fully intact.
I have contemplated the possibility of similar things as well. Thanks for elucidating them so succintly and concisely on this thread for all to peruse.