"... often analysis seems to be based on the assumption that future economic output is almost entirely determined by inexorable economic forces independently of government policy so that devoting more resources to one use inevitably detracts from availability for another."

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In the final analysis, animals in shelters are not being killed because there are too many of them, because there are too few homes, or because the public is irresponsible. Animals in shelters are dying for primarily one reason–because people in shelters are killing them.

— Nathan Winograd