People in general are prone to suggestion. For example, jimmy kimmel recently had a video clip where his staff filmed people on the street. They were handle an iPhone 4S but told it was the new iPhone 5 (this was done before the iPhone 5 was released). Their comments on the superiority over the iPhone 4S was too funny. Some even had an iPhone 4S in their other hand. "It's faster, it's thinner, it's got a better screen, more responsive, better looking"