Patriota, A. and Sarmento , A.B. 2024. Discussion of the Paper "Connecting Model-Based and Model-Free Approaches to Linear Least Squares Regression" by Lutz Dümbgen and Laurie Davies (2024): The Monotonicity Problem. Statistica. 84, 2 (Jan. 2024), 109–111. DOI:https://doi.org/10.60923/issn.1973-2201/22027.