Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointing

Surely Mr. Gatto has stumbled upon something of importance, I don't deny that. Most readers though may find this book largely pointless because nothing is sourced.There is no bibliography. Quotations are not cited.For example I was reading on page 40 that Max Mason says the new education model is for 'the control of human behavior.' When I read this I thought "wow that's interesting." Then I proceeded to find the source of this claim. This is what I found on page 391:'Should I now attempt to dazzle you with this grotesque assemblage arranged into a formal bibliography. I'll concede it would hardly have been possible ...'Worthless.