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> fast personal, point-to-point, at-hand, energy-dense transporation is great! and so is having grass and trees with kids and dogs playing. but there's no need to pit them against each other.

Of course. The problem is externalities. If the people enjoying their energy-dense personal transportation aren't incurring the full costs of that transportation, then 1) there will be probably way more of it than there would be in a market with costs internalized and 2) the people who don't use it have a good reason to be upset.





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