I don't know exactly what the Supremes did but I don't think this is it, Bill. It's a bit like a tennis match where the spectators heads can be seen looking to their right, then their left, then to the right again. It goes:
Massei: calumny with the aggravating circumstance ('the AC') that she tried to conceal her part in the murder by accusing somebody else
Hellman: calumny without the AC
ISC: calumny with the AC
Nencini: calumny with the AC
ISC: calumny without the AC (yesterday)
ECHR: no calumny at all (tomorrow)
It then seems counter-intuitive when factoring in the sentence. This is how Massei breaks down the 26 year sentence he imposed:
Amanda Knox is also answerable for the crime
of calunnia, she must be condemned to a total punishment of 26 years of
imprisonment (base penalty 24 years; increased to 24 years and 6 months for the
simulation [staging]; to 24 years and 9 months for carrying the knife; to 25 years for
theft and increased, finally, by a further year for calunnia).
Hellmann sets it at 3 years, without the aggravating circumstance, "re-determin(ed) the sentence in consideration of the fact that this crime was thus no longer directly related to the crimes of which she was acquitted." (Cf. Nencini)
ISC (Section 1) in 2013 (according to Nencini) heard from the Prosecutor General who appealed, in part,
Contradictory and evidently non-logical reasoning concerning the failure to recognize the aggravating teleological purpose regarding the presumed crime of calunnia. (Cf. Nencini)
ISC (Section 1), then partially annuled the calunnia, in effect sending part of it back to the Nencini court -
"limited to an evaluation of the aggravating of the teleological purpose, devolving upon this Court of remand, a “(...) new judgment guided by a more comprehensive evaluation of the available evidence.“(Page 45 of the sentence of the Supreme Court) The outcome of the decision of the Supreme Court formed a partial substantial [definitive] judgment regarding the crime of calunnia."
Nencini then said that the, "Supreme Court remanded to the judgment of this district Court solely the question of whether having committed the crime of calunnia in order to gain impunity from the more serious crime of murder constitutes an aggravating factor."
He then concludes by sentencing Knox this way.
"Thus, the penalty to be imposed on Amanda Marie Knox for the crime of calunnia with multiple aggravations must be established in 3 years and 6 months of imprisonment (base penalty [336] of 2 years and 6 months increased to 3 years of prison for the aggravating factor under second paragraph of article 368 of the Criminal Code, and further increased to the above mentioned final penalty for the aggravation under article 61 no. 2 Criminal Code)."
It seems that the ISC (Section 5) from March 2015 simply returns to Hellmann's reasoning without the aggravating circumstance, at the three years, included in time served.
So it seems to have gone this way:
Massei: calumny with the AC - one year
Hellman: calumny without the AC - 3 years.
ISC: calumny with the AC - at least three years.
Nencini: calumny with the AC - 3 1/2 years
ISC: calumny without the AC (yesterday) - 3 years
ECHR: no calumny at all (tomorrow) - cannot come soon enough.
This does not seem to make sense.