In their substantive introduction, the editors first revisit two classical sites of controversy which have offered frameworks for theorizing the interplay between materiality and sociality: reification and fetishism. Obviously, these critical vocabularies emerge as crucial sites of perplexity as soon as the ontological boundary between subjects and objects is rendered equally problematic and fluid as the epistemological boundary between the imaginary and the real. A thumbnail sketch of the history of the two discursive traditions (from Marxism up to Actor Network Theory) provides an elaborate systematic framework for introducing the individual articles. The first axis of debate is generated by conceptual residues of the traditional tug-of-w...