Comfort is very important to me. I think people live better in big houses and in big clothes. I try to contrast; life today is full of contrast... We have to change. I am not interested in the past, except as the road to the future. Give me time and...

Opportunity cost is the potential benefit of an alternative opportunity that must be sacrificed when choosing a specific action. In other words, opportunity cost measures the cost of giving up one opportunity to take another. For example, if you want to buy a new car, you need to give up...