A reversal is just anything that's a surprise. It's a way of keeping the audience interested.
“I don't have a story about an epiphany in which I suddenly realised I wanted to be an actor. It was much more a case of the idea dawning on me gradually.”
“People were more interested in the phenomena than the art itself. This, combined with the growing interest in collecting art as an investment and the resultant boom in the art market, made it a difficult time for a young artist to remain sincere without becoming cynical.”