 Other reviewers were less enthusiastic . The Daily Telegraph 's Catherine Taylor found the protagonist " a little too credulous . " She also found McEwan 's " wilful narrative sadism " sadly missing from the work . The review in The Economist was even more scathing : referring to Sweet Tooth as " not Mr McEwan 's finest book " , the reviewer concluded that by the end , " it is hard to feel much of anything for these heroes , who are all notions and no depth . " James Lasdun of The Guardian found that there were " momentous political questions " raised in the earlier parts of the novel , which were not fully addressed by the end . Stylistically , Serena found herself caught in exactly the kind of narrative she disliked , but , asked Lasdun , " to what end ? " Particularly the ending of the book was polarising . Kellaway saw it as " a good excuse to go back to the beginning and read this rich and enjoyable novel all over again " , while another reviewer confessed that , though the ending " might be enough to send McEwan acolytes scurrying back through the novel to see how he did it ... it made me want to throw the book out the window . " 
