There were also serious concerns regarding the idea of cosmologically distant quasars. Some mounds took on unusual shapes, such as the outline of cosmologically significant animals. According to Schuyler Camman, the design of TLV mirrors was cosmologically significant. The unusual stability of the helium-4 nucleus is also important cosmologically. Further research has shown other observations made, but not interpreted cosmologically. They are understood cosmologically as "descending" levels through which reality is created and structured.