<font size="4"><font face="tahoma,sans-serif">....(and are now obsolete).  Unrelated to greenbuilding except for a few comments in the original response, I am nonetheless passing this site on to you all who are knowledge seekers, a description that fits many on this forum.  Open if your interest is piqued.   Sacie<br>

<br><a href="http://www.quora.com/What-are-some-systems-we-live-with-today-that-were-designed-for-a-world-of-the-past#ans903979">http://www.quora.com/What-are-some-systems-we-live-with-today-that-were-designed-for-a-world-of-the-past#ans903979</a><br>

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