And human eyes, of course, are notoriously unreliable. This fantastic episode of Radiolab recounts the series of Alanis Morissette-song-worthy near-misses that prevented people from observing the Queensland pitch in the act of dropping. One time, John Mainstone -- a Queensland professor who curates the Pitch Drop experiment and has made it his mission to observe its fall -- stepped out to get tea. During the 15 minutes he was away, because of course, the pitch dropped. Another time, later on, Mainstone and his colleagues put video-monitoring technology to use to record the moment even if no humans were nearby to see it. The equipment malfunctioned. The pitch dropped, unobserved.
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