United to start charging passengers extra if they want to more than one bag. Can pay bathrooms on airplanes be far behind? Actually, though, one can imagine charging for baggage being a good thing for most people. There are real, if minor, externalities involved in checking additional bags.

All that said, I find the trend over time to reduced quality and lower prices for air travel slightly odd. It seems like the kind of thing you'd expect to see in a country that was becoming poorer over time rather than in a growing economy.

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