(1975–2020) Moussa, known as ‘MT’, was the data analysis and use technical advisor on the MEASURE Evaluation project in Côte d’Ivoire from 2007 to 2015. MT was able to translate any idea presented to him into code, and cared deeply about making the tools he developed accessible, available, and useful. MT was always available to listen and eager to share his knowledge with others. During his time with JSI, he mentored several students in statistics and helped them complete their theses. Among the many people who mourn MT are his wife, four children, and colleagues, many of whom were his friends.