With a Better Understanding of Physics, We Could Predict Volcanic Eruptions
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.
Perhaps the most famous game-theory contest is the prisonerβs dilemma. In the prisonerβs 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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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.
βI shouldnβt be fighting with a piece of plastic to draw an angle,β 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 angleβs 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.
βI went down this path of product design, trying to come up with something thatβs small, thatβs almost simplistic β¦ that is able to improve the lives of people in tiny ways through good design,β Fang said.
Fang didnβt 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.

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:
That guidance proved essential as Fang spent the past year user-testing prototypes in class on himself and his classmates, refining the toolβs 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.
βItβs a ton of work, thatβs just the reality of it,β Fang said. βIf youβre pushing a project by yourself, thereβs not an external deadline there. What you have to do is set deadlines for yourself and say, βHey, this iteration needs to get out by Sunday.β I do late nights pretty often just to get something in on time.β

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.
βThat 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,β 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 isnβt 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.
βIβm definitely focused on getting this through to fulfillment and getting this in peopleβs hands,β Fang said. βI think that is the most satisfying part of doing products β getting to see people using them.β