Experimental system is the small functional part of a research. The aim of having it is to answer specific questions related to the research. Although it brings answers, it asks also new questions and therefore they causes an ‘inconcludable game’. It is also mentioned that an experiment must always give an undiscovered outcome or something unpredictable because otherwise it does not have the sense of experiment. With each experiment, one needs to find a new result.
In his book ‘Toward a History of Epistemic Things’ historian of science Hans-Jörg Rheinberger defines an experimental system as: ‘A basic unit of experimental activity combining local, technical, instrumental, institutional, social, and epistemic aspects’, which makes this term interdisciplinary.