Admittedly im only 2 chapters in but its not as good a srednicki. Also I don't like how more than half the material is presented through stand alone exercises rather than a more natural speech sort of flow....you know, like srednicki.<br><br>Maybe this is the result of having 3 authors, idk. It reads like a paper rather than a textbook.<br><br>It is the only serious string theory textbook I know of though so thank you BB&amp;S for that.