What's on Your Mind?

Below, Tom Griffiths shares five key insights from his new book, The Laws of Thought: The Quest for a Mathematical Theory of the Mind. Griffiths is a professor of psychology and computer science at Princeton University and director of the Princeton Laboratory for Artificial Intelligence. What’s the big idea? How can we study something we can’t see or touch? Mathematics allows us to develop rigorous theories about how minds work. It also lets us use those theories to build artificial intelligence systems. Just as physicists seek to identify Laws of Nature, cognitive scientists hope to discover the Laws of Thought. Listen to the audio version of this Book Bit…

AI is no longer the future of healthcare; it’s already reshaping how patients are diagnosed and treated. Some of the most interesting developments involve systems that sense and respond to human emotion. Cedars-Sinai’s Connect platform, for example, adapts care based on patient sentiment; CompanionMx interprets vocal and facial cues to detect anxiety; and Feel Therapeutics uses emotion-sensing wearables to tailor interventions in real time. At the same time, clinical tools are evolving. Hospitals are pairing large language models (LLMs) with AI note-taking apps such as Nabla and Heidi, which can listen, summarize, and respond to the nuances of doctor–patient conversat…

The consulting firm Accenture recently laid off 11,000 employees while expanding its efforts to train workers to use artificial intelligence. It’s a sharp reminder that the same technology driving efficiency is also redefining what it takes to keep a job. And Accenture isn’t alone. IBM has already replaced hundreds of roles with AI systems, while creating new jobs in sales and marketing. Amazon cut staff even as it expands teams that build and manage AI tools. Across industries, from banks to hospitals and creative companies, workers and managers alike are trying to understand which roles will disappear, which will evolve, and which new ones will emerge. I researc…

It is hard to believe that in 2025, we are still dialing to schedule doctor appointments, get referrals, refill prescriptions, confirm office hours and addresses, and handle many other healthcare tasks. In fact, I created Zocdoc nearly 20 years ago to help patients avoid the dysfunctional phone experience and schedule appointments online. But I must confess that I have to pick up the phone sometimes, too—and I dread it. I am not alone. According to a recent survey my company conducted, most Americans say they dread calling their doctor about as much as they dread getting a shot. At best, it is an inconvenience. At worst, the phone is a barrier to care and a wildly ine…

The startup playbook that built Uber, Airbnb, and DoorDash is becoming obsolete in real-time. As AI compresses jobs that once required hundreds of employees into algorithms, we’re witnessing the birth of a new company archetype—capital-efficient, immediately profitable, and surprisingly small. With a variety of software to use for all aspects of building a business—from Shopify for e-commerce to Stripe for payments—and low operating costs, innovation just keeps making everything that much more efficient. Advancements in AI are turbocharging this even further. Now, companies not only need less software and less capital for solutions to get off the ground, but they also…

If you ask journalists and PR professionals what they fear most from AI, typically they’ll say variations of the same narrative: AI will make content so easy to create that their roles will have little to offer. Virtually any AI model today can write passable articles and pitches (and lots more), so it feels like the value of the human touch is questionable at best. It is true that AI is automating big parts of knowledge work, and exactly how that plays out in media and adjacent industries is still being determined. At the same time, AI is transforming information discovery. Billions of people now get information from AI experiences—either chatbots or synthetic summar…

It’s no surprise that artificial intelligence is transforming the way we learn, but it also has the potential to add a sprinkling of magic to on-the-job training. Turning the ordinary into the extraordinary is especially beneficial in the skilled trades. We’re already seeing social media inspire the next generation of tradespeople, and AI-based learning programs can help attract, develop, and retain young talent. In the U.S., hiring for skilled roles, including electricians, industrial machinery workers, plumbers, and HVAC technicians, could be more than 20 times the projected annual increase in new jobs from 2022 to 2032. The current pipeline of skilled trades tr…

In an era where artificial intelligence is rapidly redefining creative industries, branding stands at a pivotal crossroads. Tools like Midjourney and DALL-E are often portrayed as threats to traditional visual branding, but their true value may lie elsewhere—not in replacing human creativity, but in expanding the sensory dimensions of brand expression. At the bread and butter, a global brand consultancy, we believe branding should never be superficial. It should touch. Move. Resonate. That’s why we built our practice around “Betterment Branding”—a philosophy that connects long-term brand growth to emotional, sensory, and social resonance. Today, the intersection of A…

Generative AI is radically reshaping the job market—creating new roles, changing some, and phasing out others. But here’s one effect of the transformative technology that’s not as widely talked about: It’s deepening long-standing workplace gender gaps. A double disadvantage According to a recent report from the World Economic Forum and LinkedIn, women systematically face a two-part problem in the ongoing AI transformation. Relatively fewer women are currently in jobs that are being augmented by generative AI, and relatively more are in roles that are being disrupted. According to LinkedIn data for the US, 24.1% of men work in augmented occupations, while 20.5%…

I recently noticed a paradox among a team of developers. With AI, engineers started writing code faster and getting answers in seconds, yet they also reported feeling more exhausted than before. AI hasn’t actually reduced the amount of work that needs to be done. Instead, it has fundamentally changed its nature. We can now run multiple tasks in parallel and perceive this as productivity. Up to a point, it is. But eventually, managing tools and constantly switching between them becomes more draining than performing the original tasks themselves. In some cases, it even slows down the process of finding a solution. I’ve been managing developer teams for over 15 years…

Sports are entering a new era and it could be powered by artificial intelligence. Jeremy Bloom, CEO of the X Games, is placing a bold bet on AI to revolutionize how competitions are judged and scored. From reducing human error to enhancing fairness and accuracy, AI judges could redefine the future of professional sports. But can machines truly replace human judgment on the world’s biggest stages? View the full article

I founded my company nearly two decades ago. As a bootstrapper, it was initially just me, but soon enough we grew to a dozen people, then a few dozen, then a hundred, and so on. In the early days, I remember feeling confident in my hard skills, like product development and growth strategy. But soft skills were uncharted territory. So I did what you do: practiced the tough conversations and speeches in front of the mirror. It helped—preparation is half the battle—but sometimes I imagine how much faster my leadership skills would have developed if I had real-time feedback. That’s one of the features of AI-powered leadership platforms. For today’s businesses, …

I’m a writing professor who sees artificial intelligence as more of an opportunity for students, rather than a threat. That sets me apart from some of my colleagues, who fear that AI is accelerating a glut of superficial content, impeding critical thinking and hindering creative expression. They worry that students are simply using it out of sheer laziness or, worse, to cheat. Perhaps that’s why so many students are afraid to admit that they use ChatGPT. In The New Yorker magazine, historian D. Graham Burnett recounts asking his undergraduate and graduate students at Princeton whether they’d ever used ChatGPT. No one raised their hand. “It’s not that they’…

For most of modern finance, one number has quietly dictated who gets ahead and who gets left out: the credit score. It was a breakthrough when it arrived in the 1950s, becoming an elegant shortcut for a complex decision. But shortcuts age. And in a world driven by data, digital behavior, and real-time signals, the score is increasingly misaligned with how people actually live and manage money. We’re now at a turning point. A foundational system, long considered untouchable, is finally being reconstructed by using AI—specifically, advanced machine learning models built for risk prediction—to extract more intelligence from existing data. These are rigorously tested, wel…

The nonstop cavalcade of announcements in the AI world has created a kind of reality distortion field. There is so much buzz, and even more money, circulating in the industry that it feels almost sacrilegious to doubt that AI will make good on its promises to change the world. Deep research can do 1% of all knowledge work! Soon the internet will be designed for agents! Infinite Ghibli! And then you remember AI screws things up. All. The. Time. Hallucinations—when a large language model essentially spits out information created out of whole cloth—have been an issue for generative AI since its inception. And they are doggedly persistent: Despite advances in model si…

At a recent retreat I was attending, I found myself in one of those “hallway moments.” Walking out of a lecture, I was engaged in conversation with a fellow attendee. Soon it became clear we had differing opinions about the topic. As I felt myself getting tense, formulating my response in my mind, I caught a glimpse of myself in a wall of mirrors as we walked by a pilates studio on the property. I didn’t like what I saw—it was not my best self. I did not look calm, cool and collected; instead, I looked tense and ready to charge. The exact opposite vibe that was the goal of this retreat. That quick glimpse of myself helped me to check myself, adjust my face, slow down my t…

The Fast Company Impact Council is a private membership community of influential leaders, experts, executives, and entrepreneurs who share their insights with our audience. Members pay annual membership dues for access to peer learning and thought leadership opportunities, events and more. AI and energy are two of the most critical forces shaping the future of our planet—and their relationship is impossible to ignore today. From the significant power consumption of data centers to the growing energy requirements of AI-driven applications, the rapid adoption of AI is driving a surge in global energy demand that is outpacing the growth of renewable energy source…

Thank you once again for reading Fast Company’s Plugged In. A quick programming note: We will be taking the next two Fridays off. Happy holidays to all, and I look forward to resurfacing in your inbox next year. For any number of reasons, 2025 has hardly been my favorite year. But if I were to make a list of things that went well, my relationship with AI would be on it. This was the year I went from being an AI dabbler to a daily user. And while some of that usage still amounts to messing around—hello, Sora!—even more involves tasks that make me more productive. More importantly, it brings me better results, a goal I hold dear. (Sadly, not every AI enthusiast …

While headlines about AI replacing workers dominated 2025, behavioral health is charting a different path. The industry thrives on human connection, measuring success in trust, healing, and human relationships, not throughput. That’s not to say AI isn’t rapidly reshaping the industry—it is. Its role here fundamentally differs because it supports clinicians rather than sidelines them. Over the next year, I predict we’ll see a paradox play out: Behavioral health will become increasingly AI-enabled, and simultaneously, more human than it’s been in decades. The reason is simple. Burnout and administrative burdens have been increasingly limiting what clinicians can do. Pro…

Generative AI was trained on centuries of art and writing produced by humans. But scientists and critics have wondered what would happen once AI became widely adopted and started training on its outputs. A new study points to some answers. In January 2026, artificial intelligence researchers Arend Hintze, Frida Proschinger Åström, and Jory Schossau published a study showing what happens when generative AI systems are allowed to run autonomously—generating and interpreting their own outputs without human intervention. The researchers linked a text-to-image system with an image-to-text system and let them iterate—image, caption, image, caption—over and over …

To help small aerial robots navigate in the dark and other low-visibility environments, my colleagues and I developed an ultrasound-based perception system inspired by bat echolocation. Current robots rely heavily on cameras or light detection and ranging, known as lidar, or both. But these sensors fail in visually challenging conditions, such as smoke, fog, dust, snow, or complete darkness. I’m a scientific engineer who develops bio-inspired microrobots. To solve this challenge, my research team looked at nature’s experts at navigating in poor visibility: bats. They thrive in dark, damp, and dusty caves and can detect obstacles as thin as a human hair using echol…

When someone opens the door and enters a hospital room, wearing a stethoscope is a telltale sign that they’re a clinician. This medical device has been around for over 200 years and remains a staple in the clinic despite significant advances in medical diagnostics and technologies. The stethoscope is a medical instrument used to listen to and amplify the internal sounds produced by the body. Physicians still use the sounds they hear through stethoscopes as initial indicators of heart or lung diseases. For example, a heart murmur or crackling lungs often signify an issue is present. Although there have been significant advances in imaging and monitoring technologies, t…

Megan Rapinoe, Caitlin Clark, Serena Williams, Mia Hamm, Lindsey Vonn—the list of high-profile, recognizable women athletes is growing. And track and field athletes may be the next to become household names. That’s the bet that Alexis Ohanian is making with Athlos, an all-women’s track and field league, which is hosting its second event in New York this week. Ohanian is perhaps best known as the cofounder of Reddit, but he’s also an investor who’s made no secret of his interest in investing in sports. During a press event in New York City this week, he said the idea for Athlos came to him while watching the Olympics, during which millions of people tune in to wa…

Under the rally cry of “Altadena Is Not for Sale,” the people of the multi-racial, middle-class town of Altadena, California, are aiming to take charge of their own recovery and rebuilding from the Los Angeles Eaton fires, which killed 17 people, burned more than 14,000 acres, and destroyed over 9,000 homes and businesses. Three community organizations and the local Native American tribes reflect the various perspectives, and collective unity, on how Altadena might avoid the fate of other communities whose recovery ended up being controlled by big developers. Altadena: Not For Sale, My Tribe Rise, and Altadena Strong are three community organizations who have cohosted…