As bioethics gains more prominence in public policy debates, it is time to more fully reflect on the following: what is its role in the public square, and what limitations relate to and barriers impede its fulfilment of this role? I contend we should consider the how of bioethics (as a policy influencer) rather than simply focus on the who or what of bioethical enquiry. This is not to suggest considerations of latter categories are not important, only that too little (...) attention has been paid to parallel or resulting policy involvement—involvement that will require specialised skills and knowledge that we can develop with a proactive (vs reactive) stance. Moreover, and equally critically, this how of public policy involvement will require more transparency regarding influences (eg, philosophical, ideological, cultural, socio-political) on what bioethicists bring to the table and what constituency base each represents—a humility as to the scope of one's role. In this vision, bioethics is not one single person or belief system for a policymaker to call to guide or give support to a position; rather, it offers tools—formed and utilised by a diverse disciplinary range of individuals—to help guide ethical analysis of biomedical endeavours, with the goal of infusion and diffusion of ethical enquiry and prioritisation in health policymaking, and greater humility among bioethicists who inform this discussion. (shrink)