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”
Cotton needs 500 mm of water to produce cotton wool, and 1 kg of cotton wool requires 8,500 liters of water to fill 40 baths. A fashion company can make a pair of jeans from this. It needs at least 2,700 liters of water to create a T-shirt. This amount is enough for one person to use as drinking water for three years. Clothing consumption has recently increased by an average of 60% each year on Earth. The Aral Sea in Uzbekistan was the fourth-largest lake in the world, but it has now shrunk to one-tenth of its original size, as river water has been used to grow cotton due to increased consumption. Few people are concerned about how their consumption affects the global environment. - Joseph’s “just my thoughts”