Exactly.
With regard to this whole saga, it was Douglas Preston who first wrote about this term. IIRC despite having good Italian contacts, as well as family who were Italian, he'd never of the term until it came up in relation to his own work on The Monster of Florence case - particularly when Mignini himself hauled Preston in for questioning.
In his book, Preston reveals that in the MoF case the Italian authorities actually had consulted with an American FBI BSU, which had written a profile of who the killer might be. Preston found that description quite compelling, but equally compelling was the bizzare reason why chief inspector Michele Guittari and the prosecutor,
Giuliano Mignini, chucked it aside in favour of their satanic-rite theory involving high levels of Italian society.When Preston tried to understand why (on earth!) Italian prosecutions proceed this way - needlessly ruining so may lives, this is what Preston writes (copied from another source) where he's introduced to the term:
I'm reminded of Barbie Nadeau's constant refrain, "Knox is not telling us something she knows." An American version of dietrology. I mean, Barbie's just trying to fit in......
And now a nod to Machiavelli - who views Amanda Knox with a mixture of naivety as well as world-class criminal-cunning.....
I'm a big fan of the Preston/Spezi book, Monster of Florence. And Spezi's previous work is largely based, IIUC, on the previous work of the author Magdelene Naab, who collected voluminous archives on the Monster cases, when the police appeared to be uninterested or floundering in their investigations.
But I think you may be over stating Preston's view here.
Yes, this paragraph introduces the notion of dietrologia in the MOF book (although obviously Preston and the count did not invent the concept out of whole cloth, so if its real, of course there will be prior references to it).
But Preston also shares the view of a police official, IIRC, who asks Preston at the end of the chapter, if he had ever wondered whether the MOF investigations were about the accumulation of power?
The two previous investigators (Peregino and Vigna?) both received high level promotions for achieving the conviction of Pacciano as the Monster of Florence serial killer.
But the problem was there was no possibility Pacciani was guilty. Pacciani's appeal was falling apart in Feb of 1996, and the prosecutor had taken Pacciani's side and arguing for acquittal.
Giuttari had taken over as chief of the 'Monster squad' in October of 1995, and just 4 months later the case was falling apart.
This is when Giuttari dredged up the 'algebraic witnesses', including the homeless alcoholic prostitute Ghiribelli, who first introduced the satanic sect into her witness testimony.
Giuttari tried to get the algebraics into the appeal trial of Pacciani the day before the expected acquittal was to be announced. The judge declined to hear them, and that became the basis for newspaper headlines the next day, decrying the acquittal, and the presence of supposed eye witnesses, and gave cassation the excuse it needed to nullify Pacciani's acquittal on appeal.
It was only by fabricating the 4 algebraic witnesses, and compelling a confession from one of them (Lotte, the village idiot), that Giuttari could claim to have a confession and have, "cracked the case".
So it wasn't "dietrologia" per se, that caused the police under Giuttari to reach for multiple perpetrators in the MOF crimes, but rather, it was because their single perp Pacciani had been shown to be a wrongful accusation and was going down in the courts.
Similarly, only by coercing a statement from Amanda, could the case against Patrick (another innocent) be maintained. But again, that's not strictly speaking dietrologia. It's the practical necessity of framing an innocent person to generate some form of evidence, eye-witness testimony, when no other evidence exists.
So I agree with a lot of what you've written here Bill, but I think the major incentive for Mignini and Giuttari to insinuate themselves into the MOF case through the Narducci trail, and later the Kercher case, was to achieve promotion by contributing to the successful prosecution of that most famous case, and from which previous investigators had demonstratively reaped success and career advancement.
Giuttari framed Vanni and Lotti to save the unraveling conviction of Pacciani. But pursuing the Narducci trail as per an inquiry from Mignini, you can call it self-delusion, or ruthless cynicism, or both. But dietrologia alone doesn't completely explain it, in my view, and according to Preston/SPezi in MOF.
Mach must be blowing his stack somewhere reading this. I think he's been cautioned to stay off these boards, but that is pure dietrologia on my part.