Late 20th century DNA analysis conducted on Assyrian members of the Assyrian Church of the East, Chaldean Catholic Church and Syriac Orthodox Church by Cavalli-Sforza, Paolo Menozzi and Alberto Piazza, " shows that Assyrians have a distinct genetic profile that distinguishes their population from any other population . " Genetic analysis of the Assyrians of Persia demonstrated that they were " closed " with little " intermixture " with the Muslim Persian population and that an individual Assyrian's genetic makeup is relatively close to that of the Assyrian population as a whole . " The genetic data are compatible with historical data that religion played a major role in maintaining the Assyrian population's separate identity during the Christian era ".
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In contrast to the TCSEC's precisely defined hierarchy of six evaluation classes & mdash; the highest of which, A1, is featurally identical to B3, differing only in documentation standards & mdash; the more recently introduced Common Criteria ( CC ) & mdash; which derive from a blend of more or less technically mature standards from various NATO countries & mdash; provide a more tenuous spectrum of seven " evaluation classes " that intermix features and assurances in an arguably non-hierarchical manner and lack the philosophic precision and mathematical stricture of the TCSEC . In particular, the CC tolerate very loose identification of the " target of evaluation " ( TOE ) and support & mdash; even encourage & mdash; an intermixture of security requirements culled from a variety of predefined " protection profiles . " While a strong case can be made that even the more seemingly arbitrary components of the TCSEC contribute to a " chain of evidence " that a fielded system properly enforces its advertised security policy, not even the highest ( E7 ) level of the CC can truly provide analogous consistency and stricture of evidentiary reasoning.
