As those of us who, for our sins, have been involved with such programmes know, some of these ideas about aspirational targets are borrowed from quality management and total quality management programmes. In the case of quality, defects are driven out until one gets as close to zero as possible. We are trying to work towards zero waste. It is rare to get total quality, but the constant process of working to keep on identifying the next slice
of improvement is valuable. That is one of the original sources of the term zero waste.