{"id":227,"date":"2018-04-23T07:26:59","date_gmt":"2018-04-23T07:26:59","guid":{"rendered":"http:\/\/www.milq.info\/?page_id=227"},"modified":"2026-07-13T15:35:15","modified_gmt":"2026-07-13T13:35:15","slug":"m13_keine_aussagen_ueber_einzelereignisse","status":"publish","type":"page","link":"https:\/\/www.milq.info\/en\/m13_keine_aussagen_ueber_einzelereignisse\/","title":{"rendered":"No statements about individual events"},"content":{"rendered":"
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<\/p>\n

Is it really the case that no statements about individual events are possible in quantum mechanics?<\/h2>\n

This statement does indeed need to be made a little more precise: if the probability of an event is 0 or 1, statements about individual events can be made as well. As an example, we can consider the double-slit experiment:
\nThere are, in fact, places on the screen where no photons are found at all. The probability of finding a photon there is 0. Therefore, for every individual photon detected on the screen, one can predict with certainty that it will not be found at these places. In this way, a definite prediction about an individual event has been made.<\/p>\n

Another example: if an ensemble of quantum objects has been prepared for a particular property \u2014 for example, an electron beam for the property “momentum \"p_0\"” \u2014 one can predict with certainty that a momentum measurement will yield the value \"p_0\". The corresponding probability is 1.<\/p>\n

However, it is immediately obvious that these special cases, in which predictions about individual events can be made with certainty, are only special cases of statistical statements with probability 0 or 1. In this respect, the statement still holds that in quantum mechanics only statistical predictions can be made.<\/p>\n

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Is it really the case that no statements about individual events are possible in quantum mechanics? This statement does indeed need to be made a little more precise: if the probability of an event is 0 or 1, statements about individual events can be made as well. As an example, we can consider the double-slit… Continue reading No statements about individual events<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-227","page","type-page","status-publish","hentry","without-featured-image"],"yoast_head":"\nNo statements about individual events - milq<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.milq.info\/en\/m13_keine_aussagen_ueber_einzelereignisse\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"No statements about individual events - milq\" \/>\n<meta property=\"og:description\" content=\"Is it really the case that no statements about individual events are possible in quantum mechanics? 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This statement does indeed need to be made a little more precise: if the probability of an event is 0 or 1, statements about individual events can be made as well. 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