What are coincidences – do they exist at all? What is the difference between everyday coincidences and the »spontaneous« decay of atoms? And what has a demon to do with it?
Whether the prediction of a horoscope comes true and you meet an old friend again on the same day or whether you find 50 euros in the middle of the sidewalk during a walk – we encounter coincidences again and again. Sentences like »That can't be a coincidence!« are then not seldom the reaction and even Albert Einstein declared in his time: »God doesn't play dice.« The principle of coincidence is just as exciting as it is complex, so it's a perfect topic for our scattershot team – consisting of the two statisticians Sascha Feth and Jochen Fiedler and our moderator Esther Packullat.
How is the term »coincidence« defined mathematically and what conclusions arise from this for everyday situations that we interpret as coincidence? What distinguishes the world of quantum mechanics from the macrophysical one in this respect? What role do cats play, and what chances of success would an omniscient demon have in a game of dice? As always, we answer these and a few more questions for you from the perspective of statistics.
If you have noticed a statistic or number curiosity in the media that we should definitely discuss and question, then please let us know.