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@lnxw48a1 Not really reverses, more like shifts them.

I know how people feel about "dark web" now, but from how I remember it, it was like this:

Originally "deep web" was similar to "deep links", referring to things that are not on the front page and in the case of the deep web not indexed.

The dark web was not out in the light, not visible, so intranet portals and other things that require authorization. Tor and stuff wasn't really prominent in the discourse at this point, but would have been included in stuff not ordinarily reachable.

Later the connotation of dark as something sinister narrowed the dark web to scary overlay networks where places like Silk Road exist. This left a gap for what to call the walled-off web, so the deep web term shifted to cover this gap. I would say the transition happened over time about 2010–2015, but it also differs depending on whether you look at popular media, or web and security professionals, where popular media would have shifted first.