This tendency is pretty simple to understand; a skill degrades unless it is practiced regularly. For example, flying an airplane is not something you should do once in a while. If you’re not flying often as a pilot, you should not be flying as a pilot. Similarly, investing is not something you want to do once in a while. In the context of investing, it is both a fact of life and a shame that so many people spend more time picking out an appliance than picking an investment or investment fund.
