> without payoff I'd say R2-D2's design paid off tremendously. People loved it! It made potentially billions. Billions isn't enough of a payoff? What if Chekh

> without payoff I'd say R2-D2's design paid off tremendously. People loved it! It made potentially billions. Billions isn't enough of a payoff? What if Chekhov's gun is in my story, solely because it polls better among readers?