[valtaherra]

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One of Sen's examples is that the invention of the car made things worse for people who didn't have a car, because the invention of the car (predictably) lowered the quantity and quality of other types of transportation

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As an aside, I would just like to point out that the reason for the lowering of quantity and quality of other types of transportation, trolleys in particular, was entirely due to government and had nothing to do with market forces.

Although, its almost a moot point since the entire transportation infrastructure of the United States is state run.

Google "Taken For A Ride" and read a little bit about it if you are unfamiliar.