There are no Sunzi police to enforce an orthodox interpretation of The Art of War decided upon by an official Sunzi authority. But there was also no single author called Master Sun who wrote The Art of War with a unified, coherent meaning that could or can be uncovered or determined by careful study. Many hands wrote, compiled, and edited the work that would be attributed to the fictional Master Sun, and as a result it is complex, generally coherent, and displays several underlying lines of argument. The Art of War was interpreted differently by its many commentators starting in the third century CE and continuing to the present. Those interpretations were the product of their respective authors, and the times and places in which they wrote.