Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Outdated information

Although the Merck Manual is used by every veterinary student to prepare for the NAVLE exam, it is unfortunately a very outdated reference. The reviews written in such terms as "indispensable" and "on every veterinarian's desk" must be written by graduates from days long past. The Manual is still stuck in the 1970's and veterinary medicine has progressed far past it.