In Mirror for Man by Clyde Kluckhohn, he explains the differences and similarities among the people of the world by stating two important ideas: 1) People are similar because They have the same biological equipment. and undergo similar life experiences "such as birth, impotence, illness, old age and death", but 2) people are culturally different because of the way they were raised and they may live in a different environment created by human beings, and acquire a social heritage distinct from their own people. Kluckhohn suggests that where a person lives is one of the factors that determines their culture. In China, people have a strong aversion to milk and dairy products. In the United States, a person drinks milk from birth because American society has set a model for its people; Americans make milk an integral part of their meals because they are told it is the only way to stay healthy, develop strong bones, and avoid diseases such as osteoporosis, a disease caused by the lack of calcium (found in milk). Therefore, the Chinese may not understand why Americans drink milk so often, and Americans may wonder why the Chinese do not know the health benefits of milk. Kluckhohn suggests that cultural misunderstandings exist between different groups of people because they are not aware that "each specific culture constitutes a kind of model for all life's activities." I support Kluckhohn's theory that culture is determined by a person's environment and "design." for a living." I grew up in Los Angeles and have friends of varying ethnicities, languages, birthplaces, and cultures. My best friend came from Korea nine years ago and equated to American behavior Yet I don't understand why Sandy remains stoic when she has a serious problem or why her parents never show public affection to her or themselves. I asked my mother if the behavior. of Sandy was strange and she answered "no" because she said that Sandy was from Korea where she grew up in a different environment, where her culture taught her ethical and moral values ​​different from the values ​​taught in the United States. I realized that even though Sandy will stay in the United States for the rest of her life, she will never “give up” her Korean values ​​or her Korean upbringing..