They really should change it to "nanotech-claimed" products, since the center apparently simply reads the labels and takes nanotech claims at face value. The 450-500 products number is increasingly being cited by the mainstream media as absolute fact.
I'm not certain why the Wilson Center continues its unquestioning nanocount. But it is important to remember that its Project on Emerging Nanotechnologies exists as a self-appointed watchdog for environmental and health risks. The more nanotech products it can claim, the higher the public alarm. The higher the alarm, the more the media and citizens are going to come to the Wilson Center for "answers."
This is especially true if the center reinforces "the unknowns" about the health and environmental impacts of nanoparticles. When it comes to public perception, it doesn't even matter if you take whatever unknown percentage of the Wilson Center list that actually does contain nanoparticles and check to see whether they have, in fact, been studied.
The point is to not confuse the public with facts, but to lead it toward the "obvious" conclusions based on the limited information contained within the loaded question.
In my mind, the exaggerated claims by the Wilson Center are no different than the manipulation of information put out by some green organizations or get-rich-quick investment gurus.
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