The December 2018 premiere of Netflix’s “Black Mirror: Bandersnatch” offered consumers a new way to influence the entertainment they’re watching. Netflix has a growing list of choose-your-own-adventure movies. What viewers might see as a simple choice, such as which breakfast cereal a character begins the day with, could affect the whole show’s storyline. There are other choices to make as well – some of which change the plot, and some of which may not.