From my days in Debate, I observed that you could follow links between documents. Remember this is LONG before hypertext and the web, but at the end of papers are the references. You start to see the same papers referenced many times, and you find there are typically only 10 real papers you need to understand. Here I found a couple on a model of what happens in space, a couple about measuring devices in a cyclotron, and a couple about an experiment that actually flew in space. And I observed that none of them had worked together…
