In contrast to other studies on marginalization and participation, this book takes its point of departure in the complexities that characterize and shape both individuals and societies, past and present. Its chapters challenge demarcated fields of study and conceptions of identity framed marginalization and participation. Drawing attention to the fact that the centre (continues to) define the margins, the work presented here joins research efforts that highlight the need to focus on the constitution of marginalization and participation in a wide range of settings with the explicit aim of going beyond static boundaries that define the human state at different scales of becoming and beyond an understanding of development and progress in terms of a linear trajectory.