From: nicolaas.vroom@pandora.be   
      
   An article with this title is in Nature of 28 September 2018 at page 446.   
   The first sentence of this article reads:   
   "New twist on thought experiment yields conflicting results"   
   The subject of the article is a new version of the Erwin Schrödinger's cat   
   thought experiment in which the cat is replaced by two human beings   
   (Alice and Bob) and with two observers. (one for Alice and one for Bob)   
      
   My problem with this thought experiment is how can you claim, based on the   
   outcome of this thought experiment, anything about the real world.   
      
   The article contains the following sentence:   
   "One of the two friends (Alice) can toss a coin and - using her knowledge   
   of quantum physics - prepare a quantum message to send to the other friend   
   (Bob). Using his knowledge of quantum theory, Bob can detect Alice's message   
   and guess the result of her coin toss"   
      
   For me this text is not clear, is not complete and does not give enough   
   detail. What means: "her/his knowledge of quantum physics"?   
   What is a "quantum message"? How does Bob "guess"?   
      
   What baffles me the most is the answer on the question:   
   What have human observations to do with the physical state of any process.   
   Specific what have human observations to do with the half-life of a radio   
   active process? IMO nothing. IMO it is much better to replace   
   the cat with a counter and count the number of gamma particles released.   
   Ofcourse you can claim that before you look at the counter, the counter   
   is in a set of states simultaneous (like both dead and alive) but   
   that is of no physical significance.   
      
   Nicolaas Vroom   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)