[I]f you want to make a perfect duplicate of something, all you need to do is to put identical parts in identical structure. The principle is the metaphysical underpinning of industrial mass production; to make another ’01 Ford Explorer, all you need to do is to assemble identical parts in identical structural configurations.

Jaegwon Kim, ‘Supervenience, Emergence, Realization, Reduction’, in Michael J. Loux and Dean W. Zimmerman (eds.), The Oxford Handbook of Metaphysics, Oxford, 2003, p. 567