OK. I was just hoping to offer practical advice to a person trying to beat a photo radar ticket, who might be led astray by the hearsay rule. I will now direct my pedantry at a deserving target - legal TV shows. 
ETA: and, I owe you an apology for not paying attention to the distinction you were trying to make. As a practicing attorney I tend to filter out the philosophy and theory aspects underpinning the law.
