you act like I wasn't just talking with someone here on HN who was convinced we "live in a classical world" when in reality everything is governed by the same quantum physics on every scale.
I didn't understand your original reply to my comment; now I understand why, I think.
Perhaps I failed to express myself clearly? I didn't say anything about quantum vs. classical worlds; I made a remark about the purpose for which Herr Schroedinger devised his cat story. His purpose was the opposite of the purpose implied by the article. He thought that the absurdity of a cat being both alive and dead demonstrated the absurdity of a particle being in two states at the same time.
That is, I was talking about Herr Schroedinger's opinions, not my own. IANAPP, but FWIW I'm convinced that quantum theory in the sense of evolution of the wave function is correct. I don't know of any convincing explanation of wave-function collapse as a result of "observation". I don't buy many-worlds, and "just shut up and solve the equations" doesn't cut it for me.
So in fact I'm convinced that we don't live in a classical world.