But no matter which grade or pattern—no matter even if the greatest grandmother in the whole world wove it—every rug has a Persian flaw. The artisans of Kashan and Isfahan and Tabriz and Mashad all knew that only God was perfect—the only one who could listen to and speak the perfect truth. To remind themselves, and to show their humility, they would purposefully include one missed knot in every rug, one imperfection.
