 In 2010, an article in "Scientific American" acknowledged that dogs are considerably better at using social direction cues (e.g.pointing by humans) than are chimpanzees.In the same year, Towner wrote, "the issue may have evolved beyond whether or not there is theory of mind in non-human primates to a more sophisticated appreciation that the concept of mind has many facets and some of these may exist in non-human primates while others may not."