It is another very good example of his erroneous ways . . . . he routinely used misunderstood to refer to not/non-understoods and non-comprehensions in his lectures. . . . but then everything got lumped under his penchant for slangifying everything . . . so they were all simply referred to as "MU's" . . . he actually used that abbreviated term "MU" to refer to all that a student either didn't get or screwed up.
The man was such a bloody ham and a fraud!
He pinched the tech point from another, didn't really understand or comprehend it himself . . . and ballsed it up!