About a difference between an observer and a muon

[Maciej Wozniak]

Apart of mass, size and others - when a physicist
claim "a muon is observing exactly what Giant Guru
predicted!" - he can be absolutely sure that the muon
will never deny. With an observer it's a bit less sure.

Though, on the other hand, when an observer is a
gedanken one - he is a bit like a muon. He is also
never denying, he is never a moronic crank disobedient
to Giant Guru. Maybe that's the reason why gedanken
observers and their observations are esteemed so
much in physics.