Mitchell O’Hara-Wild (he/him) is a PhD candidate at Monash University with over 10 years of experience in time series forecasting, open source software development, and teaching statistics. His recent research focuses on semantic vector types that preserve the structure of probabilistic, temporal, and graph data for safer statistical analysis, including the distributional, mixtime, and graphvec R packages. These semantics are demonstrated in practice by the fable forecasting package, which combines these vectors to facilitate probabilistic forecasting workflows at scale.