I'm confused by the use of "accuracy" and "precision" in this article.<p>From the IEEE article: "[ultranarrow lasers] will make it practical for us to achieve an accuracy below 10^-18–more than 100 times the precision of cesium clocks."<p>From <a href="http://en.wikipedia.org/wiki/Accuracy_and_precision" rel="nofollow">http://en.wikipedia.org/wiki/Accuracy_and_precision</a>: "accuracy is the proximity of measurement results to the true value; precision, the repeatability, or reproducibility of the measurement."<p>Am I mistaken, or is the IEEE article conflating accuracy and precision?