With this question, you want to get a handle on the energy sources the manufacturer uses, their commitment to environmentally sound disposal practices of any waster generated, and just how much waste IS actually generated.
In truth, conflict is viewed as a time waster for many people, and the source of the conflict will only be felt as deeply as the level of importance it bears in the individual's life.
Free-running water is a major water waster.
Weeds need sunlight, waster, and nutrients just like your plants.
The advantage of this process is that the artist's model is not destroyed as in the cire-perdue, and if a "waster" results, a second mould can be taken.