Instruct: Classify Amazon reviews into positive or negative sentiment
Query: lasers for the extremely nerdy only!

This book consists primarily of a series of overwhelming and under-explained formulae and is clearly designed to be intimidating to all but the most nerdy of undergraduate students. Homework problems are extremely complicated-little help comes directly from the chapter's content. This book seems to throw out conventions such as clearly identify the variables immediately following the VAST number of equations. The end result is page after page of garbled numbers and symbols which seek to intimidate, rather than enlighten. As a teaching tool, this text is of the worst I have ever seen. I used to have a genuine love of lasers., I was so passionate about them that I undertook much training and became the laser safety officer at my place of employment. However, since struggling with this textbook through only five chapters, I am thoroughly sick of the entire subject! Thanks, Davis!