Philip Elmer-Dewitt trifft den Nagel für die begrenzte Aussagekraft der Umfrage auf den Kopf: The 4,413 consumers polled in ChangeWave Research’s March survey are not exactly a representative cross-section of the buying public. They’re primarily American (87%) and almost all early-adopter types. But as ChangeWave members they do tend to indicate which way the technologicalweiterlesen