The knots tied in ropes used by the unsighted characters to read is inspired by a reading system believed to be created by the Incas, called quipu or khipu.
The names Haniwa and Kofun have Japanese origins. Haniwa are Japanese Jomon period terra cotta figures of unusual style and proportion, suggesting an alien. Kofun are Jomon period keyhole-shaped burial mounds scattered across Japan, possibly of Korean influence.
Paayaan in Persian means end!
Jason Momoa, David Hewlett and Joe Flanigan all appeared in Stargate Atlantis. All three had been teamed up after finding Ronon Dex (Jason Momoa) on and off world. As well as bonding as a team in Atlantis.