I love the way Mr. Yang teaches using even games. He leaves opportunities along the way for the student, or presents him with challenges. You can't assume that he is playing his best. You can't assume that you can trust that if he made a move that it has to be a good one, and that you should not challenge it. You have to evaluate the board just as critically as you would when you play any other opponent to look for the mistakes and weaknesses. Later in the review you find out which moves were not optimal, why they were played, what you missed, and what you could have done better.
Because of this style it is impossible for me to judge how well I am doing because the bar keeps moving. I might think I am doing really poorly when, in fact, I am doing quite well. That was illustrated by the commentary in one of my lessons I took five years ago that I reviewed today...
goddess [-]: gee I seem to be in a lot of trouble now
goddess [-]: I did hane cause I was obviously weaker
goddess [-]: but this result doesn't seem good
goddess [-]: let me try to read it
pala [-]: you did well, and i did badly today
pala [-]: that is why you will feel uncomfortable
goddess [-]: oh
goddess [-]: like when I play my tournament games
goddess [-]: and the opponent doesn't play like the people at the yang workshops
goddess [-]: and it makes me crazy
pala [-]: right
goddess [-]: well I am going to spend some time thinking now
pala [-]: that is why i have to play wildly