[crazynick4]

Have you actually read through these cases? Looking through all the cases in the 2000s they are all basically cases of hypochondria on a larger scale. There's no instances of mass independent sightings of UFOs there. Just because you can't explain it doesn't mean it didn't happen.. It's OK to say we don't know.

[symplee]

There's an example in the 1950-2000 section:

  Many UFO reports may be the result of mass hysteria [0]

Granted, these weren't all independent sightings. So you're right, I agree. We don't know for sure.

https://www.smithsonianmag.com/history/how-ufo-reports-chang...