Comment by pinkmuffinere

18 hours ago

+1. As another example see https://en.wikipedia.org/wiki/Numbers_station -- people can't decipher the messages, but they strongly suspect something spy-y is going on. If they couldn't even detect it, there would be no suspicion.

Also hi StevenWaterman, I recognize you from previous comments! I think this is the first time that's happened to me on HN