So far discussion of the ‘new experimentalism’ has revealed that questioning the role of the scienti c experiment amounts to questioning some of the most basic tenets of twentieth-century philosophy of science. ese include the distinction between a context of discovery and a context of justi cation, the distinction between discovering and constructing objects and, along with that, the opposition between the arti cial and the natural and, nally, the separation between two dominant modes of practice and knowledge production, namely, science and technology. All this has been discussed with reference to experimentation in the lab, and here again it is the physics laboratory that has most captured the attention of philosophers of science. is is how the lab ideal of experimentation took shape and became consolidated.