I also had a car conversation during my stay in Ghana about professors and how you recognise a good one. People were impressed with a certain professor in Ghana because he could give clear examples and he could explain things in an easy way, which makes complex things easy to understand.
Here it the anecdote excerpt:
Expertise is more than simply possessing a skill. Summarized from Klein:
Patterns: with experience experts can discern patterns that are invisible to novices. They have a good sense of what’s typical and can therefore detect the extraordinary.
Anomalies: experts are surprised when a key event is absent while novices don’t know what is supposed to happen and therefore don’t pick up on the anomaly.
The way things work: experts have mental models of how things work—how teams are supposed to work, equipment is supposed to function, power and politics is normally wielded.
Opportunities and improvisations: Experts can imagine possibilities that contradict the prevailing viewpoint and data. They can also apply patterns from one context to a new situation creating new approaches and techniques.
Past and future: experts can predict what might happen in the future. Just ask a grade 5 teacher about what the kids will be like at the beginning and the end of the year.
Fine discriminations: experts can see differences which remain invisible to novices. Just think of expert wine tasters.
Self aware: experts are aware of their own thought processes.
Decision makers: experts can make decisions under time pressure.
I wonder if being able to distinguish between the larger picture, what's important and details shouldn't be part of expertise as well? (would that be number 6?)
And also being able to act by intuition without having to think first (and then being able to reason later why it was a good/bad move)?