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Growth in any finite system is inherently unsustainable.

It's sustainable when you keep changing what growth is - and we do. I used to have a TV/stereo cabinet modeled on a 19" rack ( head high, six or eight feet across ) ; now some people substitute for that with a phone.

Example: Can you even build a boat out of mahogany any more?

The only things that got bigger - universities, McMansions, and medical centers - appear to be subsidized. Everything else is smaller.

Exponential growth is unsustainable.

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