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Today β€” 13 September 2026Main stream
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Random rewards enrich classic game-theory insights

By: Chris Lee
11 September 2026 at 17:41

Games may be life with all the hard bits removed, but they provide a way to study why people make the choices they make. Traditional games are usually played against a static background: the rewards per outcome are constant. That limits their relevance to behavior because, in real life, the rewards and consequences of strategic choices are ever changing. Now, researchers have used a mathematical model to study a series of games that include evolving strategies and randomly varying returns.

A bit of history

Perhaps the most famous game-theory contest is the prisoner’s dilemma. In the prisoner’s dilemma, a pair of thieves have been captured and are being separately interrogated by the police. If both clam up, they will be punished for a lesser crime. If one prisoner makes a deal (defects) then that prisoner gets to go free and the other gets a heavier sentence. If both make a deal, they both get an in-between punishment.

The person running the game can start it with different rewards for cooperating and defecting to explore how the optimum strategy varies with reward and risk, which the players can figure out by varying the strategies across multiple rounds. Depending on the balance between the reward for staying silent (cooperating) and betrayal, the game stabilizes with everyone betraying everyone. In this simple situation, everyone loses.

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OpenAI Says It Has Cracked One of Math's 'Millennium Problems'

By: BeauHD
9 September 2026 at 03:00
An anonymous reader quotes a report from The New York Times: OpenAIsaid on Tuesday that its newest artificial intelligence technology had solved one of the "Millennium Problems," a collection of important unanswered math questions meant to push the world's leading mathematicians to new heights. The announcement is an another clear sign that A.I. is fundamentally changing the upper reaches of mathematics, which have long been viewed as a pinnacle of human achievement. The change has excited some mathematicians, while stirring concern among others. Over the past year, A.I. systems successfully solved a wide range of problems that have bedeviled mathematicians for decades. But these problems were not as complex, nor as closely watched, as the one that OpenAI's technology has solved over the past several days. The Millennium Problems are among the most heavily researched in the field. "This is a spectacular culmination of the arc we have seen over the past twelve months," OpenAI researcher Sebastien Bubeck said of the company's new solution. The company announced that one of its latest models, which has not yet been released to the public, needed just 88 hours to solve what mathematicians call "the Navier-Stokes existence and smoothness problem." This problem involves a series of equations that are often used to predict the weather. The equations describe the movement of water and other fluids. The Navier-Stokes problem, which has no clear practical value, asks whether these equations completely break down in certain situations. OpenAI's proof claims to have defined just such a situation. This would imply, at least theoretically, that the laws of physics themselves would break down under certain conditions: that, for example, water could be made to spontaneously explode. But mathematicians and physicists do not believe that this mathematical breakdown could really lead to such an outcome in the physical world. The Navier-Stokes problem was one of seven "Millennium Problems" selected by the Clay Mathematics Institute in the year 2000 as a way of tracking the progress of mathematics in the new millennium. The institute, founded by an American businessman named Landon T. Clay, offered a million dollars for the first correct solution to each problem. Before OpenAI's announcement, only one of the problems had been solved. OpenAI says it managed to solve the Navier-Stokes problem by coordinating as many as 10,000 AI agents, an extremely expensive process that may have cost millions of dollars in computing power. For those curious about the findings, the company has released a paper (PDF) and formal Lean proof.

Read more of this story at Slashdot.

What’s his angle? Teen frustrated by plastic protractor reimagines the classic classroom tool

31 July 2026 at 10:39
Wenxin Fang of Redmond, Wash., holds the ZeroPivot Protractor that he designed and is selling through a new Kickstarter campaign. (Photo courtesy of Wenxin Fang)

Wenxin Fang was 14 years old when he realized he was fed up with fighting with a flimsy piece of plastic in math class.

As an eighth grader at Evergreen Middle School in Redmond, Wash., Fang kept bumping into the limits of standard classroom protractors β€” the cheap, clear tools generations of students have used to measure and plot angles. Frustrated by how often he had to realign the plastic arc just to mark a single line, he started sketching an alternative in his notebook.

Two and a half years and seven design iterations later, the incoming Tesla STEM High School junior is launching the ZeroPivot Protractor, a sleek, precision-machined aluminum hardware project aiming to drag an overlooked classroom staple into the modern era.

β€œI shouldn’t be fighting with a piece of plastic to draw an angle,” said Fang, now 17, during a call from China this week where he was meeting with suppliers ahead of production of his tool.

Fang launched a Kickstarter campaign on July 26 to fund the initial production run of the ZeroPivot. The campaign hit its initial target within 48 hours and has raised more than $2,200 from dozens of early backers.

Priced at $19, the ZeroPivot is positioned as a durable, high-precision upgrade over standard $3 plastic models. The funding will cover tooling costs and help manufacture the custom-machined aluminum components through HKAA Industrial, a supplier Fang vetted and partnered with during a visit to Shenzhen.

To make the tool work, Fang abandoned the traditional semi-circular design in favor of a guide-rail system made from anodized aluminum β€” a material choice he insisted on despite the higher production costs.

Unlike a standard protractor, which requires users to mark an angle’s vertex and rays in separate steps, the ZeroPivot features an adjustable sliding mechanism that allows users to plot and draw precise angles in a single fluid sweep.

β€œI went down this path of product design, trying to come up with something that’s small, that’s almost simplistic … that is able to improve the lives of people in tiny ways through good design,” Fang said.

Fang didn’t just keep his ideas trapped in his notebook. After coming up with the initial sketches, he brought them to his middle school engineering teacher, who encouraged him to build an actual prototype rather than treat it as a fleeting thought.

The ZeroPivot Protractor. (Photo courtesy of Wenxin Fang)

When he transitioned to high school, that mentorship expanded into a full support structure. A trio of teachers helped him turn his hobby into a legitimate consumer hardware launch:

  • Steven Bonomo, an engineering and product design teacher with a background working on Microsoft’s Surface Laptop line, guided Fang through user testing, ergonomics, and physical product design.
  • Andrew Christensen, who has a background in law, walked him through the corporate, operational, and legal logistics of starting his company, Bonae Artis LLC.
  • Karen Schaeffer, a graphic design teacher, helped him refine the brand identity and the final visual aesthetics of the product and its packaging.

That guidance proved essential as Fang spent the past year user-testing prototypes in class on himself and his classmates, refining the tool’s feel and mechanics in real classroom conditions.

Balancing the demands of a hardware startup with high school homework requires an intense level of discipline β€” and plenty of late nights.

β€œIt’s a ton of work, that’s just the reality of it,” Fang said. β€œIf you’re pushing a project by yourself, there’s not an external deadline there. What you have to do is set deadlines for yourself and say, β€˜Hey, this iteration needs to get out by Sunday.’ I do late nights pretty often just to get something in on time.”

Diary of a protractor reinvention, from left: Wenxin Fang’s notebook sketches, touring a manufacturing facility in China, and various prototypes throughout the process. (Photos courtesy of Wenxin Fang)

For Fang, the ZeroPivot is just the starting point for a career he has been prepping for since childhood. His earliest memory of designing anything was at age 9 during Chinese Lunar New Year, when he used Lego bricks and superglue to create a custom ceiling hook to help his grandparents hang decorative lanterns.

Now aiming for a college degree and future career in product design and mechanical engineering, Fang sees the protractor project as proof of what simple, physical problem-solving can accomplish.

β€œThat was kind of when I first realized, hey, I could make something so simple, and I could have somebody else use it, and it could be really nice for them,” Fang said.

With the Kickstarter campaign already funded, Fang is focused on executing the manufacturing run smoothly in China and delivering the finished ZeroPivot protractors to backers by his estimated February fulfillment target.

While he isn’t yet ready to reinvent the ruler or big pink eraser, Fang does envision creating more consumer hardware tools down the road. But his immediate motivation remains remarkably simple.

β€œI’m definitely focused on getting this through to fulfillment and getting this in people’s hands,” Fang said. β€œI think that is the most satisfying part of doing products β€” getting to see people using them.”

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