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Evan Czaplicki, creator of Elm, discusses the hard parts of running an open source project: online community conflict, why its patterns arise, and a cultural history of open source. He offers ideas for more civil, productive communication.

Deviant Ollam, head of a physical penetration testing team, presents tactics for getting into buildings, from bypassing door levers with a wire to defeating bank doors. He argues that physical security is often surprisingly weak.

David Heinemeier Hansson's opening keynote at RailsConf 2019 argues against the expectation of payment for open source work, drawing on his experience releasing Rails. It also includes lighter asides about the industry.

A beginner-focused tutorial on freehand knife sharpening with a single stone, aiming for a shaving-sharp edge in about five minutes.

Bobby McFerrin uses audience participation at a World Science Festival event to demonstrate how instinctively people follow the pentatonic scale.

CGP Grey's short animated argument for abolishing the US penny, covering its cost and history.

Bryan Cantrill's talk on corporate open source anti-patterns, first given at FISL 2012 and again at the Liferay Symposium. He lays out the mistakes companies make when open sourcing code, such as announcing future open sourcing, and discusses licenses.

A dotJS 2012 conference talk by Fat (of Twitter Bootstrap fame) on what open source really means and why maintainers feel guilty about it. It covers the obligations, expectations and burnout that come with releasing popular open source software, delivered with humor.

David Christiansen gives a Strange Loop 2018 introduction to dependent types, where one language serves for both compile-time and run-time code and programs unite with proofs. It draws on his book The Little Typer.

Bryan Cantrill's OSCON 2015 talk on moving a proprietary product to open source, drawing on Sun's history with Solaris and illumos, licensing choices and the relicensing after Oracle's acquisition.

Tim Ansell presents the SkyWater PDK, a fully open source manufacturable process development kit for a 130nm process, as the first FOSSi Dial-Up talk. He covers its role in a fully open chip design flow.

A short CNET demo of Bose's electromagnetic active suspension, which gave a very smooth ride but never reached the market. It shows the system in action.

A short hyperlapse of a 2019 Toyota Corolla using comma.ai's OpenPilot 0.6.3 to drive 100 miles with no intervention except for the windshield wipers.

A short film from the Competitive Enterprise Institute adapting Leonard Read's 1958 essay I, Pencil, showing how no one person knows how to make a pencil and how many people cooperate without central planning.

Urs Hoelzle, Google's SVP of infrastructure, gives the 2012 Open Networking Summit keynote on how Google adopted OpenFlow and software-defined networking in its own networks. The slides are linked in the description.

Okta developer advocate Nate Barbettini explains OAuth 2.0 and OpenID Connect in a roughly hour-long talk. It starts from the problems the protocols solve and walks through the flows. The description notes the implicit flow material is now out of date.

A TU Vienna demo of a double inverted pendulum on a cart, using constrained feedforward and optimal feedback control for swing-up and point-to-point motion.

A short Global News report on the Pentagon confirming a $22 million UFO investigation program and releasing Navy infrared footage from the 2004 Nimitz encounter.

Lex Fridman's long interview with OpenAI CEO Sam Altman about GPT-4, ChatGPT, and the future of AI. Topics include models as reasoning engines, AI risk, and consciousness.

Sam Altman accepts the 2023 Hawking Fellowship at the Cambridge Union and speaks about OpenAI, AGI and AI safety, recorded November 1, 2023. It includes his comments on what is left for AGI and on discovering new physics.

Sintel is a 15-minute animated fantasy short made by the Blender Foundation to develop and showcase Blender, funded by community donations and released under Creative Commons.

Part two of a StrictlyVC interview with OpenAI CEO Sam Altman, focused on AI. He discusses regulation, commodification of AI, Google's reluctance to release its own models, and best- and worst-case futures.

Lex Fridman interviews OpenAI CEO Sam Altman about GPT-4, GPT-5, Sora, the OpenAI board saga, Elon Musk, Ilya Sutskever, power and AGI. The conversation runs nearly two hours.

Short clip of Donald Rumsfeld's 9/10/2001 speech acknowledging that $2.3 trillion in Pentagon transactions could not be tracked.

OpenAI's 2021 live demo of Codex translating natural language into code, from Hello World to building a game and a Microsoft Word plugin.

A demo of the 8pen, a gesture-based keyboard replacement for touchscreens that lets users enter text by moving around a circle. It is meant for phones, remotes and game controllers and mimics handwriting.

A three-minute excerpt from Milton Friedman's Free to Choose in which he uses a pencil to show that no single person knows how to make it. He argues that the free market coordinates countless strangers peacefully.

The official video for Carpenter Brut's Turbo Killer, directed by Seth Ickerman, with psychedelic 1980s-styled visuals set to rock-leaning synthwave.

An OpenZFS office hours session with ZFS co-creator Matt Ahrens answering questions on topics such as hole birth time, send/receive buffers, device removal, block pointer rewrite and performance with many snapshots.

Lex Fridman's two-hour podcast with George Hotz, founder of Comma.ai, covering openpilot, autonomous driving and Hotz's views on AI and technology.

PBS Space Time explains what happens as you approach and cross a black hole's event horizon, using Penrose diagrams and light cones as the tool for understanding spacetime there.

Clip from Lex Fridman's podcast with Roger Penrose in which Penrose argues that consciousness is not a computation. He discusses Godel-style arguments and the possible role of quantum effects in microtubules.

Lex Fridman interviews physicist Roger Penrose on consciousness, the limits of computation, quantum mechanics and his cyclic cosmology. It covers his views on AI and the big bang.

Theo de Raadt presents pledge, a new OpenBSD security mechanism that kills processes which exceed the system calls they declared they need. The talk was given late at night at Hackfest 2015.

HERO is a short animated film made entirely in Blender to showcase the Grease Pencil 2D animation tools in Blender 2.8. It mixes hand-drawn 2D with a full 3D pipeline.

A 2020 UC San Diego event with Roger Penrose and Stuart Hameroff presenting their Orch OR theory that consciousness arises from quantum processes in brain microtubules, followed by a conversation with Roger Bingham.

Physicist Roger Penrose and philosopher William Lane Craig discuss the origin of the universe on the Unbelievable? show. Topics include Penrose's three realms of reality, conformal cyclic cosmology and whether fine tuning points to a creator.

PBS Space Time explains Roger Penrose's conformal cyclic cosmology, in which the far future of our universe becomes the big bang of the next. It explores what could come after the universe ends.

Thunderf00t analyzes the leaked Pentagon UFO videos and offers mundane explanations for the fuzzy triangle and tic-tac footage.

A Hitachi promotional cartoon in the style of Schoolhouse Rock explaining perpendicular magnetic recording for hard drives.