This article published in Resource Recycling magazine provides the latest information in single stream collection measured against dual stream (or “two-stream”) recycling collection systems.
Nate Silver, in his recent best-seller “The Signal and the Noise – Why so many predictions fail but some don’t,” in describing the cost to society of failed predictions due to a poor understanding of data writes, “The signal is the truth, the noise is what distracts us from the truth.” Silver explains that we need to distinguish a right signal from our world of information overload. People make confident decisions, but often on the basis of poor predictions.
“Solutions require attitudinal change,” writes Silver. “We must think more carefully about our ideas – and how to test them. We must become more comfortable with probability and uncertainty. We must think more carefully about assumptions and beliefs that we bring to a problem.” We must understand the signal when choosing the best recycling system.