

There’s not all that much more to tell, really. And mind you it was 9 years ago. And it’s far from the only “wild” experience I’ve had that changed my perceptions.
Normally, particularly when it’s really dark, I have a lot of little blotches of a lighter, gray shade that fade and shift constantly across my whole field of vision. Until it abated temporarily, I wouldn’t have thought it possible for it to abate. But when it did, I got to experience a more potent experience of “darkness” than I had before probably ever. But it wasn’t just darkness that was amplified. My vision definitely felt “clearer” of… the ordinary sorts of visual artifacts I see pretty much all of the time.
It was a very calming and pleasant experience for sure. Definitely the sort of thing I wish could be the case all the time.
This has only happened to me once. It came on while I was meditating (so that may not particularly qualify as “spontaneous”, but anyway) and lasted until I fell asleep maybe an hour later. By morning, my vision was “normal” again.
You mentioned “good and bad.” I don’t think there was any part of that experience itself that I found “bad”, challenging, difficult, unpleasant, etc. Though that experience was had in a period of my life when I was regularly meditating and practicing mindfulness. Before that period of my life, I engaged a lot in fantasy and found it very fulfilling. But I feel like during that meditation phase of my life, I lost my taste for it, and I feel like I lost something of value. Fantasy has returned to me somewhat slowly since, but it’s still not as fulfilling as it was before. So if there’s a “bad”, it’s not particularly about that one experience about which we’re talking as it is about arguably-bad side effects of meditation/mindfulness.
I’m not saying my experience was (or wasn’t) the same as the experience you’ve had. I don’t disbelieve your account, though. And it wouldn’t surprise me if the same sort of experience I had might sometimes be experienced spontaneously by some individuals.
Windows 1.0: Just four sticks tied together with rough twine, not attached to any building or anything. Just held in the frame of the photograph in mid air by a pair of really hairy hands.
Windows 12: Same as Windows 11, except missing a window on the door all together.
Windows ME: The driver’s side window of a clown car.
Windows 95: Identical to Windows 98.
(There are a lot more like CE, NT, 2000, Server, FLP, RT, Mobile, etc, but I’ll end my list there.)
Also, the photo gives way too much credit to Vista. Also, everything from XP and after should at least have bars on the windows. Having to phone home to activate was always unreasonable. The fact that things are way worse now doesn’t mean earlier versions were unrestrictive by a long shot. (And believe me. People in XP’s era were also horrified at how restrictive and enshittified XP was compared to previous versions.)