When Wade Davis was contacted by a scientific journal in 2019 to review a paper on the subject of “Shidao,” he initially thought it was some kind of hoax. < p > < p > Davis first thought of the deliberate hoax papers of Peter boglossian, Helen pluckrose and James Lindsay, and of the 20 academic pseudo essays they produced, seven were accepted by academic journals such as gender, place and culture. < / P > < p > so many editors are caught in this trap, which makes many scholars feel embarrassed, especially after the scandal was exposed in October 2018. As a result, he could not believe that a group of scholars would regard the “excrement knife” as a scientific challenge. When the Inuit world was melting under their feet, it was difficult for him to accept that any scholar, even a reductionist, would spend time and money on such work. However, Davis became interested when he learned from a reporter in discovery magazine that the experiments were real and that the results had been published in the Journal of Archaeological Science. < / P > < p > all this stems from the story of the Inuit “excrement knife” repeated by Davis in several popular articles and speeches, which he recorded from the hunter olayuk narqitarvik in a corner of Baffin Island, Canada. < / P > < p > Davis also cites a strange experience of Peter freuchen on his fifth polar expedition with Knud Rasmussen. < p > < p > at that time, in order to avoid the storm, he was trapped in his own coffin like shelter and buried under an ice covered sledge. In his diary, he easily recalled that when he tried his best to escape, he suddenly realized that he could make a “excrement knife”. < / P > < p > “I had diarrhea, and then I tried to make the excrement into the shape of a chisel and freeze it I decided to try the chisel, and it worked. ” As one of the most successful polar explorers and the lifelong partner of knutz Rasmussen, frost is the most insightful and knowledgeable scholar in the history of Arctic ethnography. This description is bound to attract many people’s attention. However, considering that this anecdote is likely to be used to discredit the Inuit way of life, Davis has always, in a humorous way, denied that he was suggesting that he was making such a “fecal tool” assembly line. This story was also told in a speech by the Canadian Broadcasting Corporation in the year, which was included in the book why ancient wisdom is important in the modern world. < / P > < p > “in the 1950s, the Canadian government forced the Inuit to settle down, but for various reasons, olayuk’s grandfather did not want to live elsewhere. Worried about his life, his family took all the tools and equipment, believing that it would force him to leave the land. However, this is not the case. During a winter storm, olayuk’s grandfather walked out of the hut, frozen the excrement shaped like a knife into ice, then smeared saliva on the blade and began to sharpen the knife. With this knife made of excrement, he killed a dog, then made a sledge out of the body of the dog, tied the fur to another dog, and finally disappeared in the dark. ” The reason why he tells such a story that he has never seen and can be proved is to remind the audience and readers that the Inuit are not afraid of the cold, but are good at taking advantage of it. This is an indisputable fact. Leave a wet towel outside the house overnight, and you’ll get a shovel by dawn; besides, the local sleigh is made of fish and walrus meat. Frost once quipped that if you run out of food in the Arctic, you can eat your sled at any time. The writer Gretel Ehrlich, who lived among the Polar Eskimos in Greenland for eight years, believes that it is the nature of ice, and the way it moves, retreats, melts and changes with the seasons, that endows the Inuit with such a flexible mind and spirit. It can be seen that in the context of global warming, the melting and reduction of ice is not only a far-reaching challenge related to adaptation, but also a huge survival and psychological crisis for Inuit people. < / P > < p > this is the key point: the Inuit did not play any role in the climate crisis, but they were one of the most direct and catastrophic victims. However, the research team of anthropologists Metin Eren and Michelle bebbera from Kent State University in the United States made such a “excrement knife” in order to verify the linearity of the story. In the story, olayuk’s grandfather killed and skinned a dog with a “excrement knife”. In their experiments, Ellen and others inexplicably tested on pig skin. Anyone who has sliced or chewed bacon skin knows that pig skin is almost different from dog skin. In addition, olayuk did not say that his grandfather had used this tool to kill a walrus, while floring only claimed that he had used a “excrement knife” to pierce the hard snow, which was in the extremely cold Arctic, not in the relatively warm university laboratory. < / P > < p > so what causes this blind spot? Is it because of the fear of the kind-hearted animal organizations and animal rights defenders who don’t mind experimenting with pigs but refuse to do experiments with dogs? Davidson said that he fully understood and sympathized with the challenges that this posed to Ellen and his colleagues, but if it was true, it would be ironic, because it clearly violated the objective principle that science strongly advocated. However, he did not question the results or belittle the work of Evan’s experimental team. Davis believes that if we want to use scientific methods and publish decisive conclusions, we must start with a flawless research program, that is, in an experiment to test whether the “excrement knife” can be used to kill dogs, the tools created in the laboratory should of course be tested on the skin of dogs.