Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not really that good, already outdated

This book is not really that good. It's printed in tiny fonts and filled with sidebar BS so it's hard to read and keep track of what you read. The author rambles a lot and there's very little concrete information even though a lot of topics are covered in a cursory manner. Worst, this book is already way outdated, as ECNs and ATS's as well as industry consolidations plus the Grasso fiasco have changed industry landscape (and enriched many a capital pig who does not produce real products but reaps billions for stealing other people's money). Ok, I'm a financial analyst so i don't contribute anything to this society either, but I'm no capitalist pig, just a lowly employee.