@iDave- I believe gtoo means that you dont know them because they dont have any friends or family. So of course you dont know anyone that fits that profile. They're invisible because they have no network.
Ah, okay. I didn't get it because he wasn't replying to what I said despite the quote--I was referring to not having a network that extends to different areas of the country, not having no network at all. I do know people where I live now that don't have connections to other areas of the country (connections who could serve as a jumping off point for a relocation if climate change suddenly swallowed up the mid south), but they are a small minority. I "see" then just fine. Guess I need to get a more robust snark filter.