The study of flourishing increasingly recognises that wellbeing is shaped by relationships, institutions, culture, material conditions, and wider systems. Less adequately theorised is the historical constitution of the possibilities through which flourishing becomes attainable. This article begins from a simple but consequential premise: before flourishing can be achieved, sustained, or restored, it must remain possible (Abrahams, 2026a). Flourishing is therefore defined as the sustained widening of viable human possibility across psychological, relational, institutional, cultural, material, and historical ecologies of participation, while flourishability refers to the viability of human possibility itself: whether meaningful possibilities for becoming are sufficiently conceivable, legitimate, accessible, supported, enactable, and sustainable (Abrahams, 2026b). The argument is developed through the institutional threshold of the university. When a student enters a historically white institution, admission resolves only one question: whether formal entry has been granted. It does not establish whether the student’s knowledge, identity, aspirations, relationships, material circumstances, or possible futures are rendered viable within the institution they have entered. Nor does it establish what historical arrangements are already present within that institution before the student arrives. Drawing on South African higher education and the wider histories of apartheid and colonialism, the article develops the concept of flourishability debt to describe historically accumulated and unevenly distributed deficits in the conditions through which valued human possibilities become viable. The concept is developed in conversation with Fanon’s sociogenic analysis, Sen’s capability approach, Ramugondo’s occupational consciousness, Kessi’s work on Black student experience, Xaba’s epistemic healing, Ratele’s decolonial African psychology, Gobodo-Madikizela’s work on historical violence and repair, and systems-informed positive psychology. District Six, Langa, Khayelitsha, Sophiatown, and the University of Cape Town are used as situated illustrations of how material, spatial, institutional, and epistemic conditions acquire historical depth. The article argues that formal permission does not necessarily extinguish the accumulated effects of earlier prohibition, while rejecting any account of historical inheritance as inherited pathology. Historical inheritance also includes knowledge, memory, resistance, culture, relationship, and intellectual lineage. Human possibility is therefore historically constituted but not historically determined. A historically adequate psychology of flourishing must ask not only whether people have entered institutions, but what becomes possible once they are there, what remains difficult to sustain, and what those institutions are making possible for those who enter next.
Keywords: flourishability; flourishability debt; flourishing; human possibility; higher education; historically white institutions; epistemic inheritance; apartheid; positive psychology; South Africa