Don't Thumb Your Nose at Rules of Thumb

摘要

ROUGH GUIDELINES can come in handy. However, as any experienced engineer will tell you, such rules of thumb (RoT) sometimes contain dangerous assumptions. Still, RoTs do provide reasonable estimates for many engineering calculations. A while ago, I covered some RoTs that are useful, so long as you view their results with some skepticism: "Treat Rules of Thumb Right When Measuring," http://bit.ly/2SBqNTA.