Next, let the spren inspect your trap. The gemstone must not be fully infused, but also cannot be fully dun. Experiments have concluded that seventy percent of maximum Stormlight capacity works best. If you have done your work correctly, the spren will become fascinated by its soon-to-be prison. It will dance around the stone, peek at it, float around it. —Lecture on fabrial mechanics presented by Navani Kholin to the coalition of monarchs, Urithiru, Jesevan, 1175
