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I'm trying to decide, which has changed the world most.... the printing press, or computers... In the end, I think I may just pick flushing toilets.

• eru 14y ago
  And they were probably a mistake. (http://permaculture.wikia.com/wiki/Tree_bog http://permaculture.wikia.com/wiki/Tree_bog)
  • JoeAltmaier 14y ago
    Pretty silly - the sewage treatment company could use willows if they worked in bulk. Instead they use settling and digestors. Still open-air in our town. Sludge is used as landfill and sometimes fertilizer/soil amendment. What's the difference?
    • eru 14y ago
      Oh, we have enough infrastructure in the rich world to make flushing toilets work.
    • Someone 14y ago
      1) the sewage treatment company uses lots of energy and fairly clean (often drinkable) water to transport the sewage to their large-scale plants. 2) chances are that users will feel more responsible for a local, small-scale system, and not 'kill' it by flushing down all kinds of chemicals.