The majority of the "Traité complet" is devoted to explaining how "tonalité" organizes music. The primary factor of determining tonality is the scale. It sets out the order of the succession of tones in major and minor (the only two "tonal" modes which he recognizes), the distances which separate the tones, and the resultant melodic and harmonic tendencies. Tonality is not only a governed and conditioned state, but it is a socially conditioned one. Scales are cultural manifestations, resulting from shared experience and education. Nature provides the elements of tonalité, but human understanding, sensibility, and will determine particular harmonic systems. This concept was called a "Metaphysical principle" by Fétis, though Dahlhaus argues that the term is used in this case to denote an anthropological, culturally relative sense in his 1990 book Studies on the Origin of Harmonic Tonality, and theorist Rosalie Schellhous posits that the Kantian term "transcendental" might be more appropriate.