I see room for distinguishing between a particular model + simulation protocol, vs. a model designed for flexibly running qualitatively different simulations de

I see room for distinguishing between a particular model + simulation protocol, vs. a model designed for flexibly running qualitatively different simulations designed by different researchers. For the latter, emphasis on the model as a platform vs just a simulation, makes sense. I.e. a “digital twin’ meaning a rich flexible model capable of being the basis of many different simulation scenarios, not limited to a designed in class of simulations.