Twitter commissioned a two-year study to help it create metrics for what is a healthy conversation and what isn’t. Host Molly Wood spoke with Rebekah Tromble, who teaches media and politics at George Washington University and is one of the research leads on this project. The team is looking at four categories: mutual engagement, diversity of perspective, incivility and intolerance.

Twitter hires social scientists to help figure out our conversation problem

Monday through Friday, Marketplace demystifies the digital economy in less than 10 minutes. We look past the hype and ask tough questions about an industry that’s constantly changing.

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A new wearable from tech startup Humane promises to bring an AI assistant to your lapel. It attaches to your jacket, sweater or shirt and operates with voice commands or a digital interface laser projected onto the palm of your hand. It sounds like the stuff of a sci-fi novel, but the reviews so far are not good. The panning of the Ai Pin comes after five years in development, $240 million in funding and partnerships struck with the likes of OpenAI, Microsoft and Salesforce. So, what went wrong? Marketplace’s Meghan McCarty Carino asked Victoria Song, senior reviewer at The Verge, what this device is supposed to be for.

Why the Ai Pin fell flat



Artificial intelligence has become a big part of medicine — reading images, formulating treatment plans and developing drugs. But a recent investigation by Stat News found that some insurers overrely on an algorithm to make coverage decisions for seniors on Medicare Advantage, a Medicare plan offered by private insurers. Marketplace’s Meghan McCarty Carino spoke with Casey Ross, who co-reported the story. He said an algorithm predicted how long patients needed care and coverage was curtailed to fit that calculation.



When a senior is ill, can an algorithm decide length of care?

On this week’s show, the United Kingdom is cracking down on makers of sexually explicit deepfakes. We’ll look at what penalizing the practice could mean for the victims. Then, the creator economy has the attention of millions of subscribers, but also venture capital. Why content creators like Dude Perfect on YouTube and other startups are attracting so much investment right now. But we begin with Amazon. The e-commerce giant’s Just Walk Out technology lets shoppers scan an app when they enter a store so they can leave with their purchases without paying at a register. This week, Amazon said there’s growing interest in the technology among retailers outside its empire. Yet the company is reportedly reducing the use of Just Walk Out in its own brick-and-mortar stores. Marketplace’s Lily Jamali spoke with Natasha Mascarenhas, reporter at The Information, for her take on these stories.

Tech Bytes — Week in Review: Amazon, deepfakes & the creator economy



When you think about gin, what tastes comes to mind? Pine? Maybe citrus or coriander? It can vary quite a bit because unlike some spirits, gin is very lightly regulated. Distillers can throw in all kinds of flavors and call the result “gin” as long it has some minimum requirements. In the U.S., gin is gin as long as the flavor is derived from juniper berries and alcohol by volume is at least 40%. In the European Union, the minimum ABV is 37.5%. But researchers in Edinburgh, Scotland, recently identified the exact elements that define gin using nuclear magnetic resonance spectroscropy. Think of it as something like an MRI scan that lets scientists create a flavor “fingerprint.” The new technique could have big implications for this very old industry. Marketplace’s Lily Jamali spoke with Eve Thomas, who wrote about it for Wired, to learn more.



How science could disrupt the gin industry

When the chemical company DuPont unveiled Teflon in 1946, nonstick pots and pans seemed like a miracle. We now know their coatings contain “forever chemicals,” or PFAS, which don’t break down. These compounds are not only in cookware but in clothing, cosmetics and more — and they contaminate the water millions of us drink. Research shows there’s no safe level of exposure. As the EPA rolls out new limits on PFAS in drinking water, Marketplace’s Lily Jamali asked Tasha Stoiber, senior scientist at the Environmental Working Group, about the tech used to filter it.

Twitter hires social scientists to help figure out our conversation problem

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