Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[EX Q]: my scanner hasn't worked since the day i took it out of the box, installed the software, and the green light is on but when i hit scan it does nothing! looks like it's a dud. lol.
[EX A]: Negative

[EX Q]: I bought this from the same co. before christmas and was stunned that the price had doubled. On the page the price was not clear!
[EX A]: Negative

[EX Q]: Book has some interesting insight but does little to develop technical understanding. Is cheaper at B&N locally
[EX A]:
Negative