The ease and apparent naturalness of our dating system conspire to beguile us into overlooking the fact that all of the dates it generates are themselves ultimately synchronisms. The centuries-long work on constructing a coherent historical chronology on an axis of B.C.E./C.E. time has been absorbed and naturalized so thoroughly by all of us that we can take it completely for granted, and forget just how much synchronistic work our predecessors going back to the Renaissance had to do in order for us to be able to say something like 'Xerxes invaded Greece in 480 B.C.E.' This project of domestication has brought incalculable benefits in terms of convenience and transferability, but it is one that students of antiquity should be regularly defamiliarizing, because we lose as much in historical understanding as we gain in convenience when we cloak discrepant ancient data with the apparently scientific unified weave of the Julian calendar and the B.C./A.D. system. (Italics mine; excerpt from Caesar's Calendar; 12).