Scytale: By the time of CHD, the Tleilaxu hold Paul as sacred. It would only make sense that a revived Scytale would be elevated in status for having been in his presence. The way religions work, Scytale may even have been considered special for being personally killed by Muad'Dib! I also get the impression that the differences between the Masters and their "mules" were not so great in Maud'Dib's day. The Face Dancer Scytale seemed to have quite a bit of power and ambition, but over 5,000 years the Master grew to absolute legal and spiritual power in the society. The Face Dancers were bred more and more to be mere fleshly machines. But as I said, this just my impression. (I've the whole series more than ten times, and just re-read HoD and CHD a couple of weeks ago, so it's fresh in my memory.) Alia and her Other Memory: As others have stated here, she, and all of the the pre-born, had memories from both genders in the womb. I see no flaw in her knowing the Baron through her memories. The Kelvin scale: If one of the definitions of temperature is the rate at which molecules and atoms "vibrate," then the point at which there is no moelcular motion whatsoever is the lowest possible temperature. I think Herbert knew damned well that you can't go below Kelvin, and his refenences to negatives in the Kelvin were just whimsy. He did have a pretty wry sense of humor. Birthdates: Typos. There's just too much in even the first novel. And I couldn't give a rip what Brian Herbert has to say about it; he's a done a fine job of mangling his father's universe. Has he ever heard of subtlety or subtext? Or, oh, I don't know...coninuity?