One of the key principles of money is ‘opportunity cost.’ It means that when I buy something, I have to give up something else in return. We think we buy because we need something, but we often forget that we could buy something else instead. We rarely consider ‘opportunity cost’ when making a purchase. We do not compare other values against our needs. Buying something means giving up something else, but we often don’t realize it. When we spend money, we should also consider the ‘opportunity cost’; yet, in reality, we aren’t trained to do so. By making a purchase, we bypass the value comparison that may not offer any additional benefits. Maybe it’s because we lack knowledge, or perhaps the idea isn’t appealing. - Joseph’s “just my thoughts”
Traffic direction is influenced by history and traditions. What would occur if a country suddenly changed its travel direction? The costs of replacing road signs would be just the start; the nation would also need to revise traffic laws and control systems, leading to a higher frequency of accidents. Such a major change hasn’t occurred in any country since its inception. Globally, 165 countries have adopted right-hand drive (RHD), while 75 have implemented left-hand drive (LHD). Currently, 66% of the world’s population drives on the right, and 72% of all roads are right-sided. - Joseph’s “just my thoughts”