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How to ship hardware in the AI era | Caitlin Kalinowski (Apple, Meta, OpenAI)

Caitlin Kalinowski · Hardware leader — ex-Apple (MacBook Pro/Air), ex-Meta (Quest, Rift, Orion AR), ex-OpenAI (robotics)

Caitlin Kalinowski has shipped flagship hardware at three legendary companies — the original unibody MacBook Pro and MacBook Air at Apple, the Quest / Rift / Orion AR program at Meta, and most recently OpenAI's robotics division (which she publicly resigned from over the "department of war" deal). She walks Lenny through why hardware is fundamentally different from software ("we only get to compile four or five times — ever"), the 5-layer supply-chain stack that's been outsourced over 25 years, Palmer Luckey's drones-vs-aircraft-carriers argument, the impulse equation that governs robot safety, the "memory-price meteor" coming for every physical AI startup, and the four hardware design principles she carries from Apple to Meta to OpenAI.

Inside Abridge: The AI Listening to 100 Million Doctor Visits — Abridge's Janie Lee & Chai Asawa

Janie Lee & Chai Asawa · Abridge — Head of Product / Clinical Decision Support

Latent Space × Supervised Learning crossover with Janie Lee and Chai Asawa from Abridge, the AI clinical-intelligence layer with a dataset on the order of 100M medical conversations. Deep on the "air conditioning" design philosophy, the constellation-of-models architecture behind real-time in-visit guidance, why HIPAA-grade de-identification is one-way, and the hot take that PRDs are very much not dead.

The Creator of Superpowers: Why Real Agentic Engineering Beats Vibe Coding

Jesse Vincent · Creator of Superpowers (110k stars Claude Code skill kit)

Jesse Vincent —— Perl projects lead 出身、K-9 Mail 的原作者、25 年老兵 —— 把过去九个月驯服 Claude Code 的方法摊开来讲. 110k stars 的 superpowers 不是 vibe coding, 而是一套 orchestrator 架构 + 单使命 subagent 分工 + skill 系统的 agentic engineering 方法论. 这期还覆盖 Claude 删测试事件如何用一行 prompt 修好、为什么 swarm 是 2002 年的 Facebook、 以及 2028 年 GitHub 可能不存代码只存 specs 的预言.

An AI state of the union: We've passed the inflection point & dark factories are coming

Simon Willison · Open-source engineer & Django co-creator

Simon Willison (co-creator of Django, coined "prompt injection") talks with Lenny Rachitsky about the November 2025 inflection point when coding agents crossed a reliability threshold, the dark factory pattern where nobody writes or reads code, and the lethal trifecta of AI security risks.

It's 2026, and We're Still Talking Evals

Maggie Konstanty · ML Engineer · LLM Agent Evaluation Lead

Maggie Konstanty 在 MLOps.community 谈 LLM agent 评估的真实战场——为什么团队总是先发布再补 eval、 为什么 pre-prod 和 production 是"两种动物"、以及为什么所有 vendor 工具都让她最终选择自己造。 整期访谈最反直觉的 takeaway:evals 本身不难,难的是让团队对齐"什么叫好"。

OpenClaw: The Viral AI Agent that Broke the Internet - Peter Steinberger | Lex Fridman Podcast #491

Peter Steinberger · Creator of OpenClaw, founder of PSPDFKit

Peter Steinberger 讲他怎么在 1 小时内把 WhatsApp 接到 Claude Code 的 CLI, 做出了后来成为 GitHub 史上最快增长仓库的 OpenClaw。围绕这个故事展开的是 agentic engineering 的心法、self-modifying software、Moldbook 引发的 AI psychosis、改名大战、以及他从 PSPDFKit 13 年烧完到重新找回 building 乐趣 的整条弧线。最后谈到下一步可能加入 Meta 或 OpenAI。

FFmpeg: The Incredible Technology Behind Video on the Internet | Lex Fridman Podcast #496

Jean-Baptiste Kempf & Kieran Kunhya · President of VideoLAN (VLC) & FFmpeg core contributor

Jean-Baptiste Kempf (VLC) and Kieran Kunhya (FFmpeg) take Lex through the invisible plumbing of internet video — what happens between "press play" and "see pixels," why every video codec generation is roughly 30% better and 10–100× more expensive, and why dav1d ships 240,000 hand-written lines of assembly. The conversation also covers the École Centrale origin story of VLC, the Google AI security debacle and Microsoft Teams SLA episode, two intelligence-agency backdoor requests JB refused, a death threat over dropping the PowerPC port, the CIA's Vault 7 fake-VLC build, the codec patent minefield, and JB's new ultra-low-latency project Kyber (4 ms glass-to-glass for remote robotics).

Fixing GPU Starvation in Large-Scale Distributed Training

Kashish · Uber · ML Infra · Marketplace Matching Lead

Kashish (Uber ML infra, ex-Google YouTube Ads) walks Demetrios through a Sherlock-Holmes-grade Petastorm bug—GPU cluster stuck at 15-20% utilization, six debugging steps, two layers of bottleneck, and finally a "double bottleneck" reveal: PyArrow→NumPy translation was silently eating the headroom. Plus serving's latency-vs-utilization war, the reproducibility cost of parallelism, and a live diagnosis of a friend's slow DGX Spark.

Notion's Sarah Sachs & Simon Last on Custom Agents, Evals, and the Future of Work Latent Space
≈ 84 min

Notion's Sarah Sachs & Simon Last on Custom Agents, Evals, and the Future of Work

Sarah Sachs · Simon Last · Notion — engineering manager (core AI capabilities & infra) · co-founder

Notion 把 agent 重写了 5 次,从 2022 年末 GPT-4 时代试图后台跑 assistant 一直撞到今天的 100+ tools custom agent. Sarah (engineering manager) 和 Simon (co-founder) 用 84 分钟 把"为什么这么慢"和"现在为什么终于行了"都摊开讲: progressive disclosure、SQL-light queries、 notion's last exam(主动留 30% 通过率)、为什么是 credits 而不是 tokens、为什么 manager agent 是 对 70 条通知的解、以及为什么"replacing processes"比"replacing people"更准确.

The Modern Software Engineer

Mihail Eric · ML / AI infrastructure practitioner & instructor

Mihail Eric 和 Demetrios 在 SF 录音棚里把 AI coding agent 的真实工程问题挨个摊开: junior 被 cursor 截断的训练链, Eno @ Factory 强调的 validation harness, token 计费迟早被 task 计费取代, Twitter 上 "15 个 tiled Claude Code instances" 的并行神话, 团队该变小、PM 该会提 PR, 以及 下一个 superpower 是 articulation. 全程没有 framework, 全是 day-to-day 判断, 最后一句是 "just breathe".

Extreme Harness Engineering: 1M LOC, 1B toks/day, 0% human code or review Latent Space
≈ 1h 12 min

Extreme Harness Engineering: 1M LOC, 1B toks/day, 0% human code or review

Ryan Lopopolo · OpenAI Frontier Product Exploration · engineer

Ryan Lopopolo 在 OpenAI Frontier 用一个 "out there" 的约束做了 5 个月的实验: 3 个工程师, 1M LOC, 1500 PRs, 他自己一行代码都不写. 这一小时他把这套打法所有的 ratchets 全摊开: 一分钟构建、$land 自动合并、Ghost Libraries、Symphony 用 Elixir、end of bullshit plugins、 对 MCP 的 bearish 判断, 以及一句话哲学: "you can just codex things".