【推荐1】A flexible patch could help people with voice disorders talk

The human voice, with its unique ability to attract audiences, express love and sometimes annoy neighbors, is a delibate thing. Doppler’s vocal cords can easily get damaged by stress, infections, or overuse.     1    . According to a 2005 study, 30% of the population will experience a voice disorder at some point in their life.

Researchers from the University of California, Los Angeles, have developed a soft patch that attaches to the neck, detecting muscle movements and translating them into clear speech using machine-learning algorithms. Even though the device is still in the early stages, it could be a significant improvement over existing communication aids for those who have lost their voice.     2     More complex aids such as electrolarynxes, external devices held against the throat, or surgical options, can be invasive or require special training to use. This patch would theoretically be able to clean all the obstacles.

The patch works based on the magneto-elastic (磁弹性的) effect When magnetic nanoparticles are mixed into flexible materials like elastic or silicone, stretching the material can change its magnetic properties. Every time the material changes shape, the particles either rotate or move against each other, altering the material’s magnetic strength. The patch, with its copper coil border that creates a stable magnetic field, can precisely track these changes.

    3     In a trial with eight participants, the researchers captured the signals as the subjects spoke and mouthed five different sentences (including: “Hope your experiments are going well!”, “Merry Christmas!” and “I love you!”). They then trained a machine-learning model to recognize the distinct patterns of the electrical signals associated with each sentence. This algorithm was then able to predict which of the five sentences the participants spoke — whether aloud or in silence — with more than 90% accuracy.

The patch is also designed to be user-friendly. It stays on even when the skin is sweaty and can be worn for 40 minutes without getting too warm.

However, there is more work to be done. For now the device can only recognize five pre-trained phrases.     4     To make it practical at scale, the researchers will need to collect a lot more data.

【推荐2】I spoke to my parents last night and for a moment I forgot I wasn’t really speaking to them, but to their digital replicas (复制品). They live inside an app as voice assistants constructed by the company HereAfter AI.

In fact, my parents are still alive and well; their virtual versions were made to help me understand the technology. Grief tech, which lets you “talk” with the people you’ve loved and lost, has been appearing in science fiction. But now it’s becoming a reality. Although the thought of it makes some frightened, it’s not hard to see the appeal that people might turn to digital replicas for comfort.

However, there is one major limitation. These replicas may sound like someone you love, but they know nothing about you. Anyone can talk to them, and get the same reply in the same tone. “The biggest issue with the technology is the idea that you can generate a single universal person,” says Justin Harrison, founder of a technological service.

Creating a virtual avatar you can have more conversation with contributes to your feeling connected to someone you loved and lost, says Erin Thompson, a clinical psychologist. But a grieving person needs to know that these bots can only capture a small part of someone rather than replace healthy, functional human relationships.

And there are other risks. Any service that allows you to create a digital replica of someone without that person’s participation raises complex moral issues. While some might argue that permission is less important with someone who is dead, can’t you also argue that the person who generated the other side of the conversation should have a say too? And what if that person is not, in fact, dead?

If digital replicas become mainstream, there will inevitably need to be new regulations around what we leave behind online. And we’ll be better off if we cope with the possibility of these replicas’ misuse before, not after, they reach mass adoption.

Anyway, I feel lucky to still have the precious opportunity to spend more time with my parents, face to face, no technology involved.

【推荐3】The artificial-intelligence chatbot ChatGPT has shaken educators since its November release. New York City public schools have banned it from their networks and school devices. There is, perhaps surprisingly, one subject area that doesn’t seem threatened, It turns out ChatGPT is quite bad at maths.

“I’m not hearing maths instructors express concern about ChatGPT,” said Paul von Hippel, a professor at the University of Texas who studies data science and statistics. “I’m not sure it’s useful for maths at all, which feels strange because maths was the first-use case for the artificial-intelligence devices.”

ChatGPT’s struggle with maths is inherent in this type of AI, known as a large language model. It scans a large amount of text from across the web and develops a model that might be extremely effective for writing grammatically correct responses to essay requirement, but not for solving a maths problem.

In an email, I asked Debarghya Das, a search-engine engineer, why ChatGPT gets some simple questions right but others completely wrong. “Maybe the right analogy (类比) is if you ask a room of people, who have no idea what maths is but have read many hieroglyphics (象形文字), ‘What comes after 2+2,’ they might say, ‘Usually, we see a 4,’ That’s what ChatGPT is doing.” But, he adds, “Maths isn’t just a series of hieroglyphics. It’s the process of calculating.”

It isn’t great for pretending you know it through a maths class because you only recognize the mistakes if you know the maths. Another reason that maths instructors are less anxious about this innovation is that they have been here before. The field was upended for the first time decades ago with the general availability of computers and calculators.

“Maths has had the biggest revolution based on machinery of any mainstream subject,” said Conrad Wolfram, the strategic director of Wolfram Research. “In the real world, since computers came along, have maths, science and engineering gotten conceptually simpler? No, completely the opposite. We’re asking harder and harder questions, going up a level.”

Eventually, AI will probably get to the point where its maths answers are not only confident but correct. A pure large language model might not be up for the job, but the technology will improve. In general, however, AI, like computers, will likely ultimately be most useful for those who already know a field well. They know the questions to ask, how to identify the shortcomings and what to do with the answer. A tool, in other words, is for those who know the most maths, not the least.

【推荐1】If you’re gathering your teenage kids in the living room to watch “The Falcon and the Winter Soldier” on Disney+, just know there’s a good chance they’d rather be playing “Fortnite”, a popular game.

That could totally be the case according to a new study from a consulting firm in Deloitte, which analyzed the generational divide in at-home entertainment.

The study, based on an online survey of more than 2,000 consumers, showed preferences are changing rapidly between millennials and the younger generation when it comes to how they want to spend their leisure time.

For Gen Z, defined as those born from 1997 to 2007,video - whether movies or television shows - is not a priority, the study found. 26% of Gen Zers in the survey said playing video games as their favorite entertainment activity, compared to 14% for listening to music, 12% for browsing the Internet and 11% for engaging on social media. Only 10% said they would rather watch a movie or TV show at home.

That compares to millennials (born 1983 to 1996),18% of whom chose watching movies and TV shows as their preferred mode of entertainment. Video games were the the entertainment option of choice for 16% of millennials.       

“Gen Z would much rather spend time gaming, listening to music or using social media,” Jana Arbanas, entertainment leader at Deloitte, said. “That was a really alarming contrast that we saw relative to the shift that's happening and how Gen Z will impact this industry.”

“Millennials took the behaviors they developed as teenagers, and they've taken them forward into their early 30s, and so if Gen Z is anything like that, their behaviors may change slightly, but I don't see a complete aging out of their behaviors,” said Kevin Westcott, technology, media and telecom leader.