BlackRock: Why These Three Retirement Rules of Thumb are Bad Ideas
May 23, 2014 at 07:00 AM EDT
What makes a good rule of thumb? It should be memorable, pithy and, above all, useful. It also shouldn’t overreach; it just gives good guidance. “Measure twice, cut once” is a great example. It doesn’t try to explain carpentry. It just reminds us to take our time, be precise and avoid making a...