Discussions about funding research grants by lottery have centered on weighing the pros and cons of peer review, but this focus does not fully account for how an idea comes across in the field of science to those researchers directly dependent on research funding. Not only do researchers have personal perspectives, but they are also shaped by their experiences and the positions they occupy in the field of science. Applying Bourdieu’s field theory, the authors explore the question of which field-specific problems and conflicts scientists identify and for which they could imagine using a grant lottery in the allocation of research funding. Under what conditions does such a solution, which is external to the field of science, seem justified to them? The results show that different areas of application are conceivable for a lottery mechanism in the field of science but that its use seems justifiable only for legitimate field-specific quandaries.