This article examines the work of the Australian performance artist, Stelarc, in terms of philosophies of mind and body. It argues that Stelarc?s work can profitably be seen as a kind of performative ?research? into the body; Stelarc?s actions take the form of a hypothetical or speculative ontology which does not operate in order to represent possibility but to enact possibilities in real time and space. His work is compared with and shown to have some resonances with recent cybernetic and systems theories of cognition, in which cognition is figured as a form of ?enaction?. This being so, Stelarc?s performances suggest an exemplary mode in which ?hypotheses? about alternative corporeal existences may be creatively entertained. |