Salt, John D.2025-04-012025-04-012025-04-02Salt JD. (2025) Chip away everything that doesn't look like an elephant. In: Proceedings of the Operational Research Society Simulation Workshop 2025 (SW25), 12th Simulation Workshop, 31 March - 2 April 2025, Exeter, UKhttps://doi.org/10.36819/sw25.014https://dspace.lib.cranfield.ac.uk/handle/1826/23700This paper addresses the question of how conceptual models are created in a simulation modelling activity. Assuming an entity-based approach to simulation, some techniques for discovering good entity classes are considered, including personation. Also considered are the notations by which a conceptual model can be represented, and the modes of thought required for good conceptual modelling. Specifically excluded from consideration is the idea of applying a cut-and-dried method. The shortcomings of computers for conceptual modelling are remarked upon.enAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/33 Built Environment and Design50 Philosophy and Religious Studies3303 DesignConference paper567371