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Schrödinger's Cat Made
A relative of mine, tender soul, gave me a blast when I told her about Schrödinger's cat, the classic thought experiment that highlighted the strange nature of quantum superpositions. She was offended and angry that anybody would think of doing that to a cat, and refused to calm down about it even after I explained that this is a famous "thought experiment" and that nobody has EVER proposed actually doing it. Now, to anybody who grew up with a science education, this is very funny. But I've been thinking about it. That IS a terrible thing to do to a cat.
propose revising the thought experiment, and replacing the cat with a
white card. If the radioactive particle is generated by the tiny
amount of radioactive substance, it releases a spray can of paint that
colours the card black. Until one looks in the box, we must
consider the card to be BOTH white AND black.
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