The coastline paradox is actually a great example.
You can never price in all externalities, but you sure as hell can improve your pricing of externalities from what it is (in the same way a 1km resolution of coastline is better than a 100,000km resolution)
You can never price in all externalities, but you sure as hell can improve your pricing of externalities from what it is (in the same way a 1km resolution of coastline is better than a 100,000km resolution)