Common wisdom in adult education is that the majority of "floor" employees want training to be focused on things they can apply immediately to their jobs, and they tend to have little patience for the "why" or theory behind what they're being taught. In that light, would you view someone's interest in the ideas behind the information as an indicator of leadership / management potential?
In my experience, lower performers want to "do their job and go home", whereas high-performers tend to think more about their jobs.