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Missed News 350
August 25, 2020
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A math problem stumped experts for 50 years. This grad student from Maine solved it in days
August 24, 2020
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Half a century ago, a brilliant young mathematician named John Horton Conway discovered, of all things, a knot. This knot wasn’t something you’d be likely to encounter in the real world. You could certainly create it out of string if you wanted to, but, generally speaking, it existed only in Conway’s calculations. There are thousands upon thousands of these kinds of conceptual tangles in a bewildering corner of mathematics known as knot theory, but even there Conway’s discovery was special — not so much for what it was, but for what it might or might not be. Yes, that is confusing, but when talking knot theory, it’s best to accept that things are going to get a little fuzzy.
In any case, the Conway knot is hardly remarkable at first glance. With just 11 crossings or places where it overlaps itself, it’s rather nondescript by the standards of higher-dimensional knot theory. But the knot has one property that made it the subject of intense mathematical scrutiny. Conway, who died recently at age 82 of complications from COVID-19, made innumerable contributions to the field of mathematics, yet it was his knot that specialists would return to again and again. And again and again, these decorated mathematicians were unable to find a solution to what became known as the Conway knot problem.
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Mathematician Lisa Piccirillo at MIT, where she is now an assistant professor.WEBB CHAPPELL
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Missed News 349
August 24, 2020
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Missed News 348
August 22, 2020
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Missed News 347
August 21, 2020
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Daydreams Shape Your Sense of Self
August 19, 2020
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You are at home, cutting onions for dinner, and tear up from the vapor. Your mother, teaching you how to cut onions when you were a child, pops into your mind: Guide the blade against the knuckles of your free hand, curling your fingertips inwards to protect them from the blade. Absorbed by the scene, you begin to think about how one day if you have kids, you might pass that tip on to them.
Most people spend a considerable part of their waking lives daydreaming, their attention constantly fluttering from the task at hand to the thoughts, images, and memories moving through consciousness. Why is daydreaming so prevalent?
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Photo from Crispy Fish Images / Shutterstock.
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Missed News 345
August 19, 2020
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How the World’s Largest Garbage Dump Evolved Into a Green Oasis
August 14, 2020
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A little less than two decades ago, the last steaming load of garbage arrived at Fresh Kills Landfill. A packed-high barge turned slowly out of the Arthur Kill — that long, dishwater-brown tidal strait that separates Staten Island from New Jersey — and then docked at the Sanitation Department’s pier, an event celebrated less as a matter of ecological stewardship at the time than a triumph of not-in-my-backyard politics.
I remember the last barge because I happened to be there. It was March 22, 2001, and I was embedded with the Department of Sanitation’s film crew, greeting the barge from the rain-soaked deck of what is known to the Sanitation Department navy as a trash skimmer, a little boat that snags flotsam, like a mechanized sea gull. The barge had set off that morning from a transfer station in College Point, Queens, heading south into the East River. Fireboats saluted the trash with water cannons, and as it passed Gracie Mansion, Mayor Rudolph Giuliani saluted it from his front lawn.
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Missed News 344
August 14, 2020
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August 13, 2020
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James' World 2 