Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Littered with errors

The author states that electromagnetic theory is one of the most diffucult couses in your curriculm, but he sure doesn't make it easy on you.The text is laced with errors, from the text itself, to missing symbols, to errors in the solutions at the end of the book.It is extremely frustrating to work on problems only to find that the error given in the Appendix is wrong.It is a shame that in its 3rd edition (as well as the revised 3rd edition) that errors are still present in the text