Researchers like Kathleen Richardson have conducted ethnographic research on the humans who build and interact with artificial intelligence.[14] Recently, Stuart Geiger, a PhD student at University of California, Berkeley suggested that robots may be capable of creating a culture of their own, which researchers could study with ethnographic methods. Anthropologists react to Geiger with skepticism because, according to Geiger, they believe that culture is specific to living creatures and ethnography limited to human subjects.[15]