Everything that is expressed and recorded externally, such as cell phones, computers, memos, books, and drawings, is an extension of the brain. Our brains aren’t just inside our bodies. This concept is important because extending the ego greatly influences how we see the world. We pay close attention to topics that involve us personally. Self-relevance is a key factor that drives our lives. Personal relationships and possessions get a lot of focus, while other areas seem less important. This is due to a feature of the human brain called ‘selective cognition.’ As civilization advanced, humans delegated parts of the brain’s functions to machines. It was inevitable to make good use of these tools. We should take an interest in the Homo Faber. - Joseph’s “just my thoughts”
British anthropologist Robin Dunbar was certain that primate cerebral neocortical capacity determines the number of social relations. He definitively established the limit of human relationships at 100 to 230 people. The average value of 150 people is known as Dunbar's number. In the world of chimpanzees, 30 is the absolute maximum. However, fewer than 12 people in the world can sympathize with me. My best friend is now reduced to 3 or 4. The relationship quantity decreases to the square root value and increases to the square value. Three or four of my best friends will eventually connect with people from all over the world. This is the same principle as when one or two virus-infected people infect the world. Focus on your best friend. - Joseph’s “just my thoughts”