I work in an aviation museum (a real one this time, as opposed to my post #12), and I find that once people are surrounded by the hardware their attitude changes. The average passenger just walks down an airbridge, or across the apron, their mind focused on getting to the seat. The people I talk to are interested in what pilots actually do, and the mechanics of how an aircraft behaves. Before anyone says that the demographic of museum visitors determines this, we have visitors from all walks of life and levels of society.