"The Morellian method is based on clues offered by trifling details rather than identities of composition and subject matter or other broad treatments that are

"The Morellian method is based on clues offered by trifling details rather than identities of composition and subject matter or other broad treatments that are more likely to be seized upon by students, copyists and imitators. Instead, as Carlo Ginzburg analysed the Morellian method, the art historian operates in the manner of a detective, "each discovering, from clues unnoticed by others, the author in one case of a crime, in the other of a painting". These unconscious traces— in the shorthand for rendering the folds of an ear in secondary figures of a composition, for example— are unlikely to be imitated and, once deciphered, serve as fingerprints do at the scene of the crime. The identity of the artist is expressed most reliably in the details that are least attended to. The Morellian method has its nearest roots in Morelli's own discipline of medicine, with its identification of disease through numerous symptoms, each of which may be apparently trivial in itself" (https://en.wikipedia.org/wiki/Giovanni_Morelli https://en.wikipedia.org/wiki/Giovanni_Morelli)