Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Human Guinea Pigs?

The book suggests that there are limits to the permissibility of experimants on humans. It points out how it has become a comman occurrence for medical investigators to take risks with patients of which the patients themselves are frequently unaware, and to submit them to mental and physical distress and possible hazards which in no way are necessitated by or have conection with the treatment of the diease from which they are suffering.