I had a new experience yesterday - I took a friend's teenage daughter out in my car to practice driving. She has her learner's permit and her mother had no qualms about sending her out with me, so I figured it would be cake. I knew to force myself to be calm and to try not to barrage her with technical information.
She did a great job for only having driven on the road once before - which I didn't know until after we returned home.
I think I learned more in that 20 minutes than she did. She may have learned that she needs to pick her speed up quicker when she gets around a corner and that it's possible to put on your turn signal too early but I learned that there are some situations in which you can't even fake yourself into believing that you have any control.