Instruct: Classify the given review into positive or negative sentiment.
Query: Valid Attempt

Charles Murray is a controversy writer, ever since his "Bell Curve" it has been obvious that he poses convictions (or maybe prejudices) that moves him. Although I approach this book with skepticism, and may not be in total agreement with his conclusions, I have to admit he has done a valid attempt to measure Human Accomplishments (not an easy task, and certainly an elusive one). It's logical that some relativity has to be involved in such a measure, anyone trying to do so will inevitably have to define a method, which in turn will definitely have to use subjective or indirect indicators. So, even if I'm not 100% convinced by his methods or in agreement with all his conclusions, I have to admit he has done a tremendous effort and a great job, Charles Murray deserves credit for this, and for making an otherwise coffe table book an excellent read.