Note that different people have different research approaches. The two old ladies check that none of them can see herself and the problem is solved! ;-)
The other older lady makes an experiment with motion and rigorously determines that she is ... well ... unsichtbar. :-)
Weekend Diversion: Superman vs. Baseball (Synopsis) - “If I had to choose a superhero to be, I would pick Superman. He’s everything that I’m not.” -Stephen Hawking But did you ever stop to imagine that one of ...
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