We're going to need some scalar dimensional measure of the verisimilitude of ongoing (re)presented Experience. With emojis, perhaps. As punctuation.
I can identify four orders of experience, as of now. There are probably more. There are definitely subcategories with different features.
First-order: Firsthand personal Experience, as experienced by the Experiencer, etc.
Second-order: the "Trial Witness/Reporter" level: the Observation of the physical layout of the physical material world, the Setting. Including the presence and behaviors of other humans and sentient beings sharing physical space and time. Physical reality, manifestly verified by gravity. The world where you can’t instantly flip the screen upside down without incurring a severe penalty. (At least not unless you’re really good, like acrobats, cliff divers, and some skateboarders. Even they had to practice a lot to get there.)
Third-order: all mediated realms of personal communication exchanges intended as exchanges between two people who already know each other- phone conversations; email; private, by invitation only social media networks. Digital transmission verified by shared human personal memories of the past. Vulnerable to voice and image faking, but also subject to informal checks that become more reliable if a more detailed inquiry is pursued. A capability that simply isn't required, under the vast majority of circumstances: personal phone conversations with ones relatives, friends, or personal acquaintances very seldom stray into realms like "can you wire me $2000?" or "I've been kidnapped!" Unlikely. But as long as that vulnerability exists, it might be possible to be taken by surprise and be fooled.
Fourth-order: everything on a screen, basically. the rest of the digital media realm. Possibly its entirety- every message from a smartphone; every digital image; every video; every Youtube clip; all digitally reproduced audio; every textual representation--including comments and chat exchanges, where anonymity is easily available, users are not reliably identified even when their user name "looks real", and comments might conceivably be generated by non-human bots (a possibility for how many years, now?) That "reality" is all up for grabs, potentially. The observation of (pre)recorded media resides at least as much in a realm of Suggestion (from memory) as it does with Mind In The Present, and possibly moreso. For example, so far the nature documentaries I watch appear to depict their subjects with authentically detailed accuracy (albeit often aided by fakery intended to fool the fauna.)
But there's nothing to stop sophisticated AI from morphing those video media depictions into fantasias bearing no relationship to actual content in the natural world. Which would mean what, in the event that it were to occur? Maybe you can figure it out for me.
I'd recognize the more blatant fakes as fakes--fanfic nature docs, the very idea--but I have some amount of offline education, outside reading, and familiarity with natural history, including in real life. And the real saving grace is that in the case of any public broadcast, there would be too many live people available to detect fakery of the provenance in the credits. (Which brings the vulnerability to its next level- "public broadcasts" that are actually tailored individually with various degrees of unreality, as the Facebook feeds tailor their SNAFU Principle to the perceived preference of the rubes. But, once again, it would be only a brief while before actual human people viewers got their stories together, and then there would be hell to pay. Surely.)
A big part of the answer is to not mistake the 4th order for the other orders. It doesn't deserve to be taken seriously. Certainly not at first glance.
So here we all are, each with our firsthand experiential perspective, focusing on observing a transmission of a Reality that's been mediated to its Fourth Order remove. Or something. This orders-of-reality framing is, in part, cribbed from something I’ve read that may have done a more thorough and complete job of it. As with the concept depicted in Venn diagrams, there isn’t anything new about “order of perceptual/cognitive experience” models. As with Venn diagrams, the concept is genuinely important and covers a lot of applications and implications. We need some language currency, to outline and describe it.
To cognitively log out of the 4th Order is to return to the world outside. Outside the screen, to check into the awesome and infinitely more real 2nd Order world. Outdoors, to breathe some clean fresh air.