Simulation is but one learning strategy among many. Likewise, many theories guide simulation-based instruction as a learning tool and the wise facilitator is familiar with the theories that support best practices. This symposium issue of Simulation & Gaming explores a few of those theories of learning and concepts that can help us enhance the experience of our learners. Several themes emerged from the articles in this symposium, many of which are interconnected, including the awareness that people, tools, and roles serve to influence, guide, and assist us in the learning environment. In addition, the role of the facilitator is reflective in nature-reflective of the needs of their learners and their own actions that they use to facilitate learning.