...There are obviously more nuanced ways to calculate dependency freshness. The advantage of this approach is its simplicity. You will be able to explain this calculation to your colleagues in about 30s. If your system has two dependencies, the first one year old, the second three, then your system is four libyears out-of-date. At Singlebrook we try to keep our client’s apps below 10 libyears. We regularly rescue projects that are over 100 libyears behind. "lib" is short for "library", the most common form of dependency. The --versions flag provides a metric for an installed dependency’s freshness relative to the newest release’s major, minor, and patch versions. ...