Portfolio Optimization Errors
A friend of mine likes to save money by ordering items in the U.S. and driving across the border to pick them up. The trouble with his claim of having saved $50 on some order is that he ignores his car costs and the value of his time. This mistake of leaving out important considerations because they are hard to value accurately creeps up in many decisions. A group of my golfer friends like to figure out whether to buy a golf membership or not. If the membership is $2400 and an average round costs $40, they reason that they need to play 60 rounds to break even on a membership. However, getting a membership gives access to regular social functions. This social consideration could easily be worth a lot to some people, and could even be a negative for others. It’s also valuable to be able to start playing when the weather is iffy without worrying about losing money if the round has to be abandoned. Some members even play more often than they really ...