Just when you think you've calculated all of the affected parties in the economic transformation to an increasingly digital world, along comes something completely different.
The in-flight magazine, that time-killer in the pocket ahead of your seat, happens to weigh about a half-pound. Multiply those half-pounds by a few hundred and they're a drag on the aircraft's fuel consumption. Which makes them, like passenger baggage, not exactly welcome aboard.
USA Today has a look at the struggles of the industry today. One airline is replacing the ink on glossy with digital content, but other airlines are finding that the advertising support is such that they can endure.