hci
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Joon Sung Park
Joon Sung Park is the CEO and Co-founder of Simile, a Stanford-spinout AI company that raised $100M Series A in February 2026 to build digital twins that simulate human behavior and predict consumer decisions. A PhD in Computer Science from Stanford (2025), Park pioneered the concept of 'generative agents' - AI actors with memory, reflection, and planning capabilities - through a landmark 2023 paper that earned a Best Paper Award at UIST and became one of the most-cited works in HCI. Before launching Simile, he was an oil painter trained in hyper-realism, a background that infuses his research with a rare sensitivity to what makes humans human. His digital-twin platform has already signed CVS Health and Telstra as customers, and his model correctly forecast 8 out of 10 questions asked at a real earnings call.
Prayag Narula
Prayag Narula is the Co-Founder and CEO of Marvin (HeyMarvin), an AI-native customer insights platform that centralizes, analyzes, and shares qualitative research data for product and UX teams. A researcher-turned-entrepreneur, he previously co-founded LeadGenius (Y Combinator W2011), which raised over $30 million and grew to hundreds of employees before he stepped down to return to his roots in user-centric design. With a graduate research background spanning UC Berkeley's School of Information and Helsinki's Ubiquitous Interaction Group, Narula built Marvin alongside his brother Chirag Narula in 2020 — this time with AI baked in from the ground up. The platform now serves 4,000+ teams and 13,000+ users, including 10 Fortune 100 companies.
Tom Yeh
Tom Yeh is an Associate Professor of Computer Science at the University of Colorado Boulder and the creator of AI by Hand, a wildly popular educational newsletter and community that teaches transformers, LLMs, and deep learning architectures through pen-and-paper calculations. With 62,000+ Substack subscribers, 200,000+ social media followers, and a Feynman-inspired philosophy that you only truly understand what you can build by hand, Yeh has become one of the most influential voices in practical AI education - bridging the gap between black-box hype and genuine first-principles understanding.
Lea Verou
Lea Verou is a Greek-American web standards leader, MIT researcher, and creator tools advocate whose fingerprints are on the web itself. She has designed web technologies now baked into every major browser, built 30+ open-source projects with nearly 2 billion npm downloads (including PrismJS and Color.js), authored the bestselling CSS Secrets (O'Reilly, 2015), and served as an elected W3C Technical Architecture Group member. A PhD candidate at MIT CSAIL in Human-Computer Interaction and Programming Language Design, she consults for Google, Mozilla, and Stripe, leads the State of HTML survey, and has delivered 100+ conference talks worldwide - always live-coding.
Shreya Shankar
Shreya Shankar is a PhD candidate at UC Berkeley's EPIC Lab building AI-powered data systems that are reliable and cost-efficient. A Stanford-trained engineer who worked at Google Brain and Meta, she bridges academic research and industry practice through DocETL (an open-source LLM data processing system with 3.5K+ GitHub stars used by 30+ S&P 500 companies), an O'Reilly book on AI evals co-authored with Hamel Husain, and a Maven course that has reached 4,500+ professionals. She is on the CS faculty job market and gave a faculty candidate talk at Carnegie Mellon in March 2026.