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The relational interpretation makes no fundamental distinction between the human experimenter, the cat, and the apparatus or between animate and inanimate systems; all are quantum systems governed by the same rules of wavefunction evolution, and all may be considered "observers". But the relational interpretation allows that different observers can give different accounts of the same series of events, depending on the information they have about the system. [25] The cat can be considered an observer of the apparatus; meanwhile, the experimenter can be considered another observer of the system in the box (the cat plus the apparatus). Before the box is opened, the cat, by nature of its being alive or dead, has information about the state of the apparatus (the atom has either decayed or not decayed); but the experimenter does not have information about the state of the box contents. In this way, the two observers simultaneously have different accounts of the situation: To the cat, the wavefunction of the apparatus has appeared to "collapse"; to the experimenter, the contents of the box appear to be in superposition. Not until the box is opened, and both observers have the same information about what happened, do both system states appear to "collapse" into the same definite result, a cat that is either alive or dead. Wimmel, Hermann (1992). Quantum physics & observed reality: a critical interpretation of quantum mechanics. World Scientific. p.2. ISBN 978-981-02-1010-6. Archived from the original on 20 May 2013 . Retrieved 9 May 2011. One can even set up quite ridiculous cases. A cat is penned up in a steel chamber, along with the following device (which must be secured against direct interference by the cat): in a Geiger counter, there is a tiny bit of radioactive substance, so small, that perhaps in the course of the hour one of the atoms decays, but also, with equal probability, perhaps none; if it happens, the counter tube discharges and through a relay releases a hammer that shatters a small flask of hydrocyanic acid. If one has left this entire system to itself for an hour, one would say that the cat still lives if meanwhile no atom has decayed. The first atomic decay would have poisoned it. The psi-function of the entire system would express this by having in it the living and dead cat (pardon the expression) mixed or smeared out in equal parts.

John Bell (1990). "Against 'measurement' ". Physics World. 3 (8): 33–41. doi: 10.1088/2058-7058/3/8/26. According to at least one proposal, it may be possible to determine the state of the cat before observing it. [37] [38] Extensions A piezoelectric "tuning fork" has been constructed, which can be placed into a superposition of vibrating and non vibrating states. The resonator comprises about 10 trillion atoms. [34] It is typical of these cases that an indeterminacy originally restricted to the atomic domain becomes transformed into macroscopic indeterminacy, which can then be resolved by direct observation. That prevents us from so naïvely accepting as valid a "blurred model" for representing reality. In itself, it would not embody anything unclear or contradictory. There is a difference between a shaky or out-of-focus photograph and a snapshot of clouds and fog banks.Romero-Isart, O.; Juan, M. L.; Quidant, R.; Cirac, J. I. (2010). "Toward Quantum Superposition of Living Organisms". New Journal of Physics. 12 (3): 033015. arXiv: 0909.1469. Bibcode: 2010NJPh...12c3015R. doi: 10.1088/1367-2630/12/3/033015. S2CID 59151724.

To further illustrate, Schrödinger described how one could, in principle, create a superposition in a large-scale system by making it dependent on a quantum particle that was in a superposition. He proposed a scenario with a cat in a closed steel chamber, wherein the cat's life or death depended on the state of a radioactive atom, whether it had decayed and emitted radiation or not. According to Schrödinger, the Copenhagen interpretation implies that the cat remains both alive and dead until the state has been observed. Schrödinger did not wish to promote the idea of dead-and-live cats as a serious possibility; on the contrary, he intended the example to illustrate the absurdity of the existing view of quantum mechanics. [1] Although originally a critique on the Copenhagen interpretation, Schrödinger's seemingly paradoxical thought experiment became part of the foundation of quantum mechanics. The scenario is often featured in theoretical discussions of the interpretations of quantum mechanics, particularly in situations involving the measurement problem. As a result, Schrödinger's cat has had enduring appeal in popular culture. The experiment is not intended to be actually performed on a cat, but rather as an easily understandable illustration of the behavior of atoms. Experiments at the atomic scale have been carried out, showing that very small objects may exist as superpositions; but superimposing an object as large as a cat would pose considerable technical difficulties. [ citation needed] Puri, Ravinder R. (2017). Non-Relativistic Quantum Mechanics. Cambridge, United Kingdom: Cambridge University Press. p.146. ISBN 978-1-107-16436-9 . Retrieved April 8, 2022. You are the only contemporary physicist, besides Laue, who sees that one cannot get around the assumption of reality, if only one is honest. Most of them simply do not see what sort of risky game they are playing with reality—reality as something independent of what is experimentally established. Their interpretation is, however, refuted most elegantly by your system of radioactive atom + amplifier + charge of gun powder + cat in a box, in which the psi-function of the system contains both the cat alive and blown to bits. Nobody really doubts that the presence or absence of the cat is something independent of the act of observation. [9] Certainly not coincidentally, the GAO issued a report in time to toss it into the impeachment debate, claiming that the president’s several week holdup of aid to Ukraine violated the Impoundment Control Act. As we argue below, it did not violate that Act. The GAO report was a partisan ploy and if the report’s findings were factual, it would violate the Constitution by circumscribing the authority of the chief executive.Fine, Arthur. "The Einstein-Podolsky-Rosen Argument in Quantum Theory". Stanford Encyclopedia of Philosophy . Retrieved 11 June 2020. Thought experiment A life-size cat figure in the garden of Huttenstrasse 9, Zurich, where Erwin Schrödinger lived from 1921–1926. Depending on the light conditions, the cat appears to be either alive or dead. Yam, Phillip (October 9, 2012). "Bringing Schrödinger's Cat to Life". Scientific American . Retrieved 28 February 2020. A description of investigations of quantum "cat states" and wave function collapse by Serge Haroche and David J. Wineland, for which they won the 2012 Nobel Prize in Physics. Najjar, Dana (7 November 2019). "Physicists Can Finally Peek at Schrödinger's Cat Without Killing It Forever". Live Science . Retrieved 7 November 2019.

Lazarou, Dimitris (2007). "Interpretation of quantum theory - An overview". arXiv: 0712.3466 [ quant-ph]. In Schrödinger's original formulation, a cat, a flask of poison, and a radioactive source are placed in a sealed box. If an internal radiation monitor (e.g. a Geiger counter) detects radioactivity (i.e. a single atom decaying), the flask is shattered, releasing the poison, which kills the cat. The Copenhagen interpretation implies that, after a while, the cat is simultaneously alive and dead. Yet, when one looks in the box, one sees the cat either alive or dead, not both alive and dead. This poses the question of when exactly quantum superposition ends and reality resolves into one possibility or the other. Musser, George (17 August 2020). "Quantum paradox points to shaky foundations of reality". Science Magazine . Retrieved 17 August 2020. Here’s the Schrodinger’s Douchebag, Chinese version (as presented on Quora by user Feifei Wang): Schrodinger’s Douchebag, Chinese version […] Almost every time someone (White or Chinese Americans alike) ask me something about China, it’s always bad or weird: do Chinese people eat dogs? do Chinese people pee at street? are Chinese people still can’t afford this and that? do you have internet? Is it true that you really can’t get on facebook or google? What about Tibet and/or Taiwan? Do Chinese people killing infant baby girls because of one child policy? Just how corrupt is Chinese government?

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Chown, Marcus (2007-11-22). "Has observing the universe hastened its end?". New Scientist. Archived from the original on 2016-03-10 . Retrieved 2007-11-25. Are there people how are really, genuinely curious about a certain bad aspect of Chinese culture? Sure there are. But the same kind of genuinely curious people are also interested in the good things about China as well. If someone comes to you asking only the bad things, you can just make an excuse and politely walk away from the conversation. People like this don’t deserve your time. They can rot in their ignorant and racist bigotry for all I care. This is what “to Kavanaugh” something is: to drag a hearing out with serial accusations and accusers so that the process becomes interminable. And this is what is happening with the Democrats’ attempt to remove Trump through impeachment and trial. For other uses, see Schrödinger's cat (disambiguation). Schrödinger's cat: a cat, a flask of poison, and a radioactive source connected to a Geiger counter are placed in a sealed box. As illustrated, the objects are in a state of superposition: the cat is both alive and dead.