“…Since Wright's () consideration of airframe production, learning curves have been studied in great detail. Learning curves are relevant to products involving discrete (Argote & Epple, ; Boucher, ; Chung, ; Dar‐El & Rubinovitz, ; Gulledge, ; Meredith & Camm, ; Mody and Wheeler, ; Pramongkit, Shawyun & Sirinaovakul, ) and continuous (Naim & Towill, ; Nathanson, ; Reis, ) manufacturing, as well as for services (Foster, ; Woods et al., ). Hundreds of articles consider various aspects of the learning curve.…”