back-to-back are also longevity symbols. The lightning pattern contains sacred calendrical
signs. Squares and diamonds incorporate contrasting elements often using colors, arrows
and shading. Some symbolize God's eyes and insight into the future.
Historically, weavers did not sign their carpets, but collectors have made that request so
some weavers are encoding their birthdate into their newest designs, since the date of birth
once was a Zapotec's given name.