The Wigner's Friend Paradox is all about trying to determine just when and how exactly a quantum event becomes real. It appears from quantum mechanics that events become real when an observation collapses the wave function of the event, or, in other words, when an observation is made. But nobody knows what an observation actually is, since it is not defined in the theory. Is it when particle A interacts with particle B? Or is it when a conscious being checks the result? And what if there are two conscious beings? This is where Wigner's Friend causes a paradox...

There is an experiment that argues against my view that consciousness is essential to the process, however, but I don't know much about it and whether the results have been replicated, nor whether the authors' interpretation of the results are beyond criticism. However, here it is, for completeness:

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ABOUT ALPHATUCANA
This channel is about 'waking up' from our matrix-induced slumber, and about leaving the World a better place than we found it. For most of us, our powers and motivation are strictly limited. We are fundamentally alone in a vast and mysterious Universe, but In the struggle to survive, to 'succeed', or to just get by, we sometimes forget the bigger picture, and we sometimes forget to just relax for a while and remember what an amazing World this is. There is plenty to look at: science, Nature, society... And there are plenty of games to help us get away from it all... So on this channel, I vlog about science, Nature, enlightenment, current affairs and much else besides, I upload sightseeing videos showing London, England, or my holidays elsewhere, and I upload gameplay videos. So why not join in for a while and see what you think?

POSTING SCHEDULE
This depends in part on whether I have had time to record videos in between going to work and living the rest of my life! Usually it runs like this:
- Most weekends: a vlog or sightseeing video.
- Gameplay videos: pretty random - typically at midday on weekdays, but not all the time.
- If I have something extra to post it usually appears at some random time :) I may livestream occasionally too.

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Not updated too often these days - YouTube comes first!
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