Chapter 5 examines the case of EU nanotechnology policy, showing that the mobilisation of ethics experts acted as atool to check the rise of a potential political conflict on ‘nanos’. By showcasing that a new type of experts representing a diversity of voices had been consulted, EU policymakers ensured that policy remained formulated within a closed community ofactors. They also successfully framed other environmental and health safety concerns as technical, rather than ethical, issues, thus allowing for a compartmentalisation of ethics and a technicalisation of the debate. The mobilisation of ethics experts helped check the rise of conflict because expert knowledge was produced in an iterative process between experts and policymakers. Policymakers gave substantial information to the EGE experts, and informed them about the tenets of the policy debate as well as its policy preferences. But orchestration was facilitated by an embedding of experts into ongoing policy debates and narratives. EU policymakers and ethics experts worked together in various crossing points, such as conferences, workshops and roundtables, where a common way of looking at the issue was developed.