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Candidates mistakenly assume they have failed the case when an interviewer offers an answer. This scene demonstrates the signal candidates are receiving when this occurs.
In this scene candidates learn a valuable lesson when using external, to the case, data/metaphors to make a point. It can lead to confusion and a loss of focus.
Michael shifts away from metaphors to think about the principles that drive a market-place monopoly. Again, Kevin is slightly rephrasing the question to help Michael.
There is a pattern occurring here. Kevin is never providing Michael with the answer. He constantly tries rephrasing the question to help Michael identify the insight needed.