Instruct: Classify Amazon reviews into positive or negative sentiment
Query: language definitely a barrier

Out of over 200 books I've bought at Amazon, this is the first I've ever returned. I found the made-up language exceptionally annoying -- the entire book is written in this pre-literate style. This worked less well than other books (e.g., Clockwork Orange) where the extra language adds color or describes foreign ideas. Other reviewers have really liked this book, but I think you should take a look at it in the off-line bookstore before you buy from Amazon.