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Marginal Thinking in "Crappy Birthday" - King of Queens
by Dirk Mateer `

Doug would rather watch the pay-per-view fight than spend Carrie's birthday with her. Richie suggests Doug tell her he has already paid for the program. That plan will only work if Carrie doesn't understand sunk costs. Since Doug has already paid, his marginal cost of watching the fight is zero. The real question is about preferences, having already paid for the fight is just an excuse since it is a sunk cost.

This Commentary is related to the following Clips:
"Crappy Birthday" - King of Queens by Created by David Litt and Michael J. Weithorn (1999) Doug would rather watch the pay-per-view fight than spend Carrie's birthday with her. Richie suggests Doug tell her he has already paid for the program.