Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good, but dated.

This was probably an excellent book when it was first written. The information is getting to be a bit dated. At least half of the hikes we have tried have had some outdated information.On one hike, the trail was nearly gone after what appeared to be years of no use. It would have been somewhat dangerous for us to continue the hike.I will probably throw the book away and get a more up to date one.