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The Best (and Worst) Ways to Shuffle Cards - Numberphile
About this video
Persi Diaconis explains on Numberphile the mathematics of card shuffling, including why seven riffle shuffles are needed to randomize a deck and how different shuffles compare.
Why it appears in the archive
HN points to it as a good, anecdote-filled introduction to the math of shuffling from the expert himself.
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From the Hacker News discussion
This video from Numberphile goes in depth about this: [LINK] . The guy talking, is Persi Diaconis, is the main author of the paper this article is based upon. He also has done research on the randomness of shuffling cards: [VIDEO] . Pretty cool stuff!
Read original comment ↗There's a great numberphile with Persi Diaconis all about shuffling: [VIDEO] The extra footage is fantastic, too.
Read original comment ↗Numberphile has a video with Persi Diaconis about the seven perfect shuffles. It gives a lot of insight and anectdotes in addition to the central theorem: [VIDEO]
Read original comment ↗One of my absolute favorite mathematicians is Persi Diaconis who is mentioned in this paper and was the original basis for this area of research. Well worth learning about. He was a runaway. Then a magician, trained by Dai Vernon and worked along side people like the late Ricky Jay and Richard Turner. He went on to get PhD from Harvard and got a MacArthur Fellowship. He is a legend. Ricky Jay talking about his childhood friend Persi: [LINK] Persi on Numberphile: [VIDEO] A great lecture: [LINK]
Read original comment ↗