Instruct: Classify a review into positive or negative sentiment.
Query: Classic Che Text Book, Horrible e-Book

This is and has been a classic book on the fundamentals of chemical engineering. My original hard copy's binding has fallen apart over the 30 years I've referenced this book. Having started the move to e-Books, I bought the Kindle version to read through my iPad app. The highlighting function of the app does not work on either my iPad or my Mac. The handlebar function used to highlight text is erratic, skipping whole sentences. It's pretty useless at this point. If I had known this beforehand, I would have purchased the updated hardback version instead. Would like to hear from Amazon if they have any recommendations on how to get this fixed.