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 acro

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.