Photo by Autopilot / CC BY-SA (https://creativecommons.org/licenses/by-sa/3.0)

When you needed to know exactly the reason for something, at least 25 years ago or more, you were pretty lost. Unless you knew a guy who knew a guy, you had to become an investigative journalist.

You’d start off going to your nearest and most current encyclopedia. You might then use a library catalog to look for books on the topic and hopefully have access to those book copies, or wait for the intra-library loan service to…