["The British Journal of Sociology, Volume 77, Issue 2, Page 332-344, March 2026. ", "\nABSTRACT\nWhat is ‘missed’ by sociological literature underpinned by assumptions of presence that a missing approach can rectify? I appropriate a metaphysics of presence and an alternative focus on what is missing as ontological foci to revisit complexity studies in sociology. I review key themes therein and show that, by predominantly adopting a being‐laden set of metaphysical assumptions, the complexity discourse overlooks subtler and more nuanced aspects of elucidating social settings. By attuning ourselves to what is missing, I make a case for what the possible consequences of this overlooking might be while showing the theorizing inadequacies of complexity thinking, which rests squarely on tangibility and observability of Aristotelian entities.\n"]