In his valedictory lecture on November 24, Emeritus Prof Theo Stewart reflected on his decades-long work on decision-making, both in its teaching and study in UCT's Dept of Statistical Sciences, and its application in the world beyond.

Stewart's research lies at the crossroads between mathematical and human sciences, exploring the nature of decision-making and its use in an array of industries and contexts.

His students, he reported, have also applied decision-making in everything from energy and health planning in Uganda to spaza shops. Despite retirement, his work will continue, he noted.