What I spend is someone else’s income. Apple co-founder Steve Jobs discussed every morning at breakfast with his family about buying a set of Miele washing machines and dryers from Germany for two weeks. Why? Of course, it was to teach their children about economics and to illustrate a lesson about opportunity cost, a common trait among wealthy people. If you buy this washing machine, you cannot buy that one. That is the opportunity cost. It’s a form of relative value, based on the idea that choosing one option means sacrificing another, so the value of each can be compared within those limits. Wealth begins with training in understanding even trivial opportunity costs. To succeed in business, you need to learn how to measure opportunity cost first, rather than just how to make money. - Joseph’s “just my thoughts”
Human beings don't know the substance of time. The time we know is only a sign expressed mathematically and astronomically by the machine "clock." Human life under the minute-unit system began when human beings lived with a comparatively precise machine. Before the Industrial Revolution, a concept of time naturally followed the ordinary way of life. When a promise was made, the condition was, "Let's meet before dinner." Therefore, there was a rare case of people angrily going outside because the counterparty was 10 minutes late. The framework that the human being makes, makes the human being again. - Joseph's "just my thoughts"