2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39604We consider some of the things that we understand about the theoretical underpinnings of duality, including items such as why the resonance peak/background ratio is constant in general, why it falls for the $Δ(1232)$, what we might expect for scaling and duality with longitudinal or spin-dependent structure functions, and what kind of scaling or duality we might expect for semiexclusive processes.8 pages, 5 figures, invited talk at N*2000 conference, dedicated to Nimai MukhopadhyayHigh Energy Physics - Phenomenologytext