“…The Multi-level Perspective (Rip and Kemp, 1998;Geels, 2005a;Grin et al, 2010) focuses on explaining large scale and long-term shifts -often 50 years or more -from one socio-technical system to another. Examples of transitions include shifts from horse-drawn carriages to automobiles (Geels, 2005b), from manual to mechanized transshipment in harbors (van Driel and Schot, 2005), from mixed farming to intensive pig husbandry (Geels, 2009), and from fossil fuel based energy system to one based on renewables (Verbong and Geels, 2007).…”