Thoughts from a user of results of Statistics Canada's LifePaths Microsimulation Model

As for more than ten years, my name has been many time associated with Statistics Canada’s LifePaths Microsimulation Model, I was asked to give my thoughts on it at the Seminar “On the Varieties of Computer Modeling: A Toolbox Approach to Analysis and Decision Making” organized by the Population Change and Lifecourse Strategic Knowledge Cluster in Gatineau (Québec) on September 28, 2011. After a narration of how I became user of results of LifePaths, I give a few examples that lead me to uncertainty because I am questioning my trust regarding methods and models used as well as data used.