Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unreliable Source

I wouldn't trust anything Samuels wrote. In other books he writes very inaccurately on ME (Myalgic Encephalomyelitis aka CFS/CFIDS). ME is a common (1M+ in US) and extremely debilitating NeuroEndocrine Immune Disease. He conflates ME (CFS) and idiopathic chronic fatigue and say ME is just a euphamism for depression. Shameful.