Though some of those bomb searches could easily be made by anyone curious about past bombing incidents. I've certainly had some curiousity-based searches about how the Unibomber did his work.
How do we end up defining naturally? That's a question the court would ask, and want to be able to provide a litmus test for going forward. I'm not sure how we do that here... Statistical probability at some specific threshold? It's a difficult question.
I also looked up whether PLA can be made conductive and if it shows up normally in x-rays, to determine if I could legally 3D print the lower receiver for a handgun in my state.
...come to think of it, I wouldn't be surprised if I tripped some queries, and they just realized I'm an insatiably curious but harmless nerd and left me be.
Scenario: Hello fellow criminals. Instead of point to point communication, we will make random posts/pages that have our combination of words on them. So if you want to read our communication, do a google search for the exact quote "purple antelope shoe couch can squirrel."