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Video directory / 41
3,553 videos with summaries and linked Hacker News recommendations, arranged by title.

Roblox Pressured Us to Delete Our Video. So We Dug Deeper.
People Make Games · 9 HN recommenders
A People Make Games follow-up investigation into Roblox, built on stories from players and creators after the channel's first video. It covers the platform's treatment of young developers and its moderation.

Robocalypse Now: Using Deep Learning to Combat Cheating in Counter-Strike: Global Offensive
GDC Festival of Gaming · 5 HN recommenders
Valve's John McDonald presents at GDC 2018 on how Valve uses deep learning (VACnet) to detect cheaters in Counter-Strike: Global Offensive. He covers training on human-reviewed replays and how model output is confirmed by manual review.

Robotic Liberation by PWP (VIC-20)
Ville-Matias Heikkilä (viznut) · 2 HN recommenders
Robotic Liberation by PWP is a music video demo performed entirely by an unexpanded Commodore VIC-20 and a 1541 disk drive, using only a few kilobytes of RAM and a 16 KB disk. It uses demoscene effects to tell a story.

Robust-first computing: Beyond efficiency
Dave Ackley · 3 HN recommenders
Dave Ackley gives a high-level introduction to robust-first computing, which prioritizes robustness over efficiency in computer architecture. A sorting demo illustrates the idea.

Robust-first computing: Demon Horde Sort (full version)
Dave Ackley · 3 HN recommenders
Dave Ackley demonstrates the Demon Horde Sort, an inherently robust sorting machine running in his Movable Feast Machine simulator. This is the uncut version with all details and side thoughts.

Rockafire Explosion Documentary
Rye & Cole · 2 HN recommenders
A 2008 documentary by Brett Whitcomb about the Rock-afire Explosion, the animatronic band built for ShowBiz Pizza Place restaurants. It follows the band's history and the fans who keep the machines and their technology running.

Rocker Jack White - Serious Jibber-Jabber with Conan O'Brien | Team Coco
Team Coco · 2 HN recommenders
Conan O'Brien interviews Jack White in a Serious Jibber-Jabber episode shot on 35mm film. They discuss White's creative process, his use of constraints and his approach to music and art.

Roger Penrose: Physics of Consciousness and the Infinite Universe | Lex Fridman Podcast #85
Lex Fridman · 3 HN recommenders
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.

Ron Pressler - Pull Push: Please stop polluting our imperative languages with pure concepts-Curry On
Curry On! · 3 HN recommenders
Ron Pressler's Curry On 2015 talk arguing that imperative languages should not be polluted with pure functional concepts like monads. He favors simple blocking code over non-blocking styles.

Ron Vale (UCSF, HHMI) 1: Molecular Motor Proteins
Science Communication Lab · 3 HN recommenders
Ron Vale of UCSF and HHMI gives an introductory lecture on kinesin, dynein and myosin motor proteins. He covers their roles in cells and how they turn ATP hydrolysis into directed motion and force.

Ropecon 2019: Essi Santala, Sampo Juustila: Odysseus – Where Code Meets Light and Sound
Ropecon · 2 HN recommenders
A Ropecon 2019 talk by a lighting designer and a software engineer on how the Odysseus larp spaceship was built, using over ten IT systems, hundreds of lights and dozens of speakers. It covers the lessons learned.

Ross's Game Dungeon: Deus Ex
Accursed Farms · 4 HN recommenders
Ross Scott's Game Dungeon episode on Deus Ex, a long review of the game covering its narrative, politics and economic philosophy as well as its design.

Ross's Game Dungeon: Deus Ex - Human Revolution
Accursed Farms · 3 HN recommenders
Ross Scott's Game Dungeon episode critiques Deus Ex: Human Revolution, looking at its design, politics and visual style. It is part of his series of opinionated game reviews.

Rotating Detonation Engine (RDE) -- Dynamics and Bifurcations
Nathan Kutz · 2 HN recommenders
Nathan Kutz presents the spatio-temporal dynamics of rotating detonation rocket engines, including combustion fronts that behave like solitons. He shows a bifurcation analysis of a multiscale model that captures the main features.

Rowan Atkinson on free speech
The Christian Institute · 2 HN recommenders
Rowan Atkinson speaks against the word 'insulting' in the UK Public Order Act, as part of the Reform Section 5 campaign. He argues for robust free speech and against the slippery slope of criminalizing offense.

RSA ANIMATE: Changing Education Paradigms
Royal Society of Arts · 10 HN recommenders
An RSA Animate drawn from a Sir Ken Robinson talk arguing that current education systems are modeled on the industrial age. It discusses divergent thinking, standardization, and how schools disengage kids.

RSA ANIMATE: Crises of Capitalism
Royal Society of Arts · 4 HN recommenders
An RSA Animate video that illustrates a talk by geographer David Harvey on the crises of capitalism. It covers creative destruction, wage stagnation masked by credit, and the search for a more just economic order.

RSA ANIMATE: Drive: The surprising truth about what motivates us
Royal Society of Arts · 11 HN recommenders
An RSA Animate whiteboard adaptation of Dan Pink's talk on what motivates people at work. It argues that beyond simple tasks, autonomy, mastery and purpose drive performance more than money.

RSA ANIMATE: First as Tragedy, Then as Farce
Royal Society of Arts · 3 HN recommenders
An RSA Animate adaptation of a Slavoj Zizek talk on charitable giving and ethical consumerism. It argues that buying products that bundle a charity donation can sustain the system that causes the problems.

RSA ANIMATE: Language as a Window into Human Nature
Royal Society of Arts · 2 HN recommenders
An RSA Animate in which Steven Pinker explains how the mind builds infinite meanings from finite language, and why people often speak indirectly. It covers ambiguity, politeness and mutual knowledge, including the emperor's new clothes example.

RSA ANIMATE: Smile or Die
Royal Society of Arts · 3 HN recommenders
An RSA Animate drawing of Barbara Ehrenreich's talk on the darker side of positive thinking. It argues that forced positivity in culture, work and policy can be harmful and played a part in the financial crisis.

RSA ANIMATE: The Divided Brain
Royal Society of Arts · 3 HN recommenders
An RSA Animate summary of Iain McGilchrist's lecture on the divided brain, arguing the brain's two hemispheres attend to the world differently and that this has shaped culture and society.

RSA ANIMATE: The Secret Powers of Time
Royal Society of Arts · 2 HN recommenders
An RSA Animate illustrating a lecture by psychologist Philip Zimbardo on how people's perspectives on time (past, present, future) shape work, health and well-being.

Ruby Conf 12 - Boundaries by Gary Bernhardt
Confreaks · 8 HN recommenders
Gary Bernhardt's RubyConf 2012 talk on testing in isolation without mocking everything. It goes through behavior versus data, mutation versus immutability, and how a functional core with an imperative shell yields natural isolation and parallelism.

Ruby Conf 12 - Y Not- Adventures in Functional Programming by Jim Weirich
Confreaks · 17 HN recommenders
Jim Weirich's RubyConf 2012 talk derives the Y combinator step by step, live-coding in Ruby lambdas. It builds up an understanding of functional programming and lambda calculus from first principles.

Ruby Manor 3 - Programming with Nothing by Tom Stuart
Confreaks · 4 HN recommenders
Tom Stuart's Ruby Manor 3 talk builds FizzBuzz using nothing but Ruby lambdas, working through Church encodings of numbers, booleans and data structures. It is a hands-on introduction to lambda calculus.

Ruby Midwest 2011 - Keynote: Architecture the Lost Years by Robert Martin
Confreaks · 10 HN recommenders
Robert C. Martin's Ruby Midwest 2011 keynote argues that software architecture should express the application's intent rather than its framework. He covers separating entities, interactors and boundaries so the web, database and framework are details.

Ruby on Rails demo
tenthconcept · 2 HN recommenders
David Heinemeier Hansson builds a blog engine with Ruby on Rails in 15 minutes, the demo that launched Rails' momentum.

Run containers on bare metal already!
Bryan Cantrill · 3 HN recommenders
Bryan Cantrill's Velocity NYC 2015 talk argues for running containers directly on bare metal rather than layering them on virtual machines. He covers the history of containers and how SmartOS runs Linux workloads via syscall emulation.

Run for your life! At a comfortable pace, and not too far: James O'Keefe at TEDxUMKC
TEDx Talks · 3 HN recommenders
Cardiologist James O'Keefe argues in a TEDx talk that moderate running confers the best longevity benefits, while extreme endurance training can damage the heart. He draws on data and his own experience as a lifelong runner.

Runaway Stabilizer!! How to stop MCAS.
Mentour Pilot · 7 HN recommenders
A Boeing 737 pilot explains the runaway stabilizer checklist, the procedure for stopping unwanted horizontal stabilizer movement such as an MCAS activation on the 737 MAX. He walks through the steps, the trim cutout switches and the jackscrew mechanism, and shows a simulator run including the manual trim wheel effort.

Rupert Sheldrake - The Science Delusion BANNED TED TALK
James Dearden Bush · 2 HN recommenders
A re-upload of Rupert Sheldrake's TEDx talk The Science Delusion, which TED removed from its channel. He challenges what he calls the dogmas of modern science, including whether fundamental constants are constant.

Rust at speed — building a fast concurrent database
Jon Gjengset · 2 HN recommenders
A guest lecture Jon Gjengset gave at Two Sigma on using Rust for large, high-performance systems. It covers why Rust suits such projects, the Noria research database, a concurrent data structure used in it, and practical experience.

Rust NYC: Jon Gjengset - Demystifying unsafe code
Rust Programming Language · 2 HN recommenders
Jon Gjengset's Rust NYC talk explaining what `unsafe` in Rust actually means, why it is dangerous, and why it is sometimes necessary. He works through the Rustonomicon to separate fair concerns from overblown ones.

Rust's Journey to Async/Await
InfoQ · 5 HN recommenders
Steve Klabnik walks through the history of Rust and how its design evolved toward async/await, including the alternatives tried and dropped. He also discusses the difficulty of adding a major feature to a language.

RustConf 2016 - A Modern Editor Built in Rust by Raph Levien
Confreaks · 4 HN recommenders
Raph Levien presents Xi editor at RustConf 2016, a high-performance text editor built in Rust. The talk goes into technical details, building polished GUI apps, and running a community-focused open source project.

RustConf 2017 - Closing Keynote: Safe Systems Software and the Future of Computing by Joe Duffy
Confreaks · 2 HN recommenders
Joe Duffy's RustConf 2017 closing keynote on his experience at Microsoft building Midori, an operating system written in a Rust-like safe systems language. He covers the technical and cultural challenges of applying those lessons to Windows.

RustConf 2018 - Closing Keynote - Using Rust For Game Development by Catherine West
Rust Programming Language · 9 HN recommenders
Catherine West's RustConf 2018 closing keynote on building a game in Rust and organizing a large codebase. It builds up an entity component system and generational indices step by step.

RustConf 2020 - Closing Keynote by Siân Griffin
Rust Programming Language · 2 HN recommenders
RustConf 2020 closing keynote by Sian Griffin that dives into Pokemon Blue glitches, notably Missingno and arbitrary-code-execution tricks. It uses them to explain how memory unsafety works and how memory-safe languages like Rust prevent such bugs.

RustLatam 2019 - Without Boats: Zero-Cost Async IO
Rust Programming Language · 5 HN recommenders
Without Boats, a Rust language team member, explains the design of Rust's async/await at RustLatam 2019. He covers the history and constraints behind zero-cost, allocation-free async state machines.

Ryan Dahl - History of Node.js
phxtagsoup · 3 HN recommenders
Ryan Dahl tells the history of Node.js and why he created it at a Phoenix meetup. He explains the push for non-blocking IO on a clean slate rather than extending an existing ecosystem.

Ryan Dahl: Node JS
JSConf · 2 HN recommenders
Ryan Dahl's JSConf EU talk introducing Node.js to the world. He explains the motivation for event-driven, non-blocking I/O, with JavaScript chosen mainly for its asynchronous nature.

Ryan Dahl: Original Node.js presentation
stri8ted · 3 HN recommenders
Ryan Dahl's first presentation of Node.js at JSConf 2009. He pitches event-driven, non-blocking I/O as the motivation, rather than JavaScript itself.

Sabine Schmitz's Nurburgring Van CHALLENGE | Top Gear - Part 2
Top Gear · 2 HN recommenders
In Top Gear's second part, racing driver Sabine Schmitz tries to lap the Nurburgring in a Ford Transit van in under ten minutes. She finishes just over the mark.

Sacha Arnoud, Director of Engineering, Waymo - MIT Self-Driving Cars
Lex Fridman · 3 HN recommenders
Sacha Arnoud, Waymo's Director of Engineering, gives a lecture in MIT's 2018 deep learning for self-driving cars course on the rise of machine learning in autonomous vehicles. It covers how Waymo uses deep learning and how it handles tricky driving situations.

Safe Cycling Showdown - Good vs. Bad City Design - Plus 1 Minus 2
Not Just Bikes · 4 HN recommenders
Not Just Bikes compares the same cycling trip to a hardware store in Calgary and in Amsterdam, using a 'plus 1 minus 2' format. It shows how street design shapes how safe and practical cycling is.

Saifedean Ammous: Bitcoin, Anarchy, and Austrian Economics | Lex Fridman Podcast #284
Lex Fridman · 2 HN recommenders
A long Lex Fridman podcast conversation with Austrian economist Saifedean Ammous, author of The Bitcoin Standard. They cover Bitcoin, fiat money, anarchy and Austrian economics.

Salad Mug - DYNAMO DREAM, Ep1
IanHubert · 3 HN recommenders
The first episode of Ian Hubert's Dynamo Dream series, a one-person sci-fi short made in Blender with a gritty futuristic city setting. It was made with help from friends and Patreon supporters over about three years.

Salman Khan TED Talk 2011 (from ted.com)
Khan Academy · 4 HN recommenders
Salman Khan's TED 2011 talk on Khan Academy. He shows that it goes beyond video lectures to self-paced practice and analytics for teachers, and argues for filling gaps in understanding.

Salt: Are you getting Enough? (More Sodium & Health)
Joseph Everett - WIL · 3 HN recommenders
Joseph Everett argues, drawing on the book The Salt Fix, that most people benefit from more rather than less salt, and reviews studies on sodium, potassium and blood pressure.

Sam Aaron live coding a DJ set with Sonic Pi
Sam Aaron · 3 HN recommenders
A long live-coded DJ set in which Sam Aaron creates all the music in real time by writing code in his Sonic Pi system. It demonstrates algorithmic electronic music performance.

Sam Aaron live coding an ambient electro set w/ Sonic Pi
Sam Aaron · 3 HN recommenders
Sam Aaron live codes an ambient electronic set using Sonic Pi, the music programming environment he created. The performance shows code driving music in real time.

Sam Altman - How to Succeed with a Startup
Y Combinator · 2 HN recommenders
A 16-minute Y Combinator Startup School talk in which Sam Altman lays out what makes a startup succeed. It covers building a product people tell friends about, exponential markets, real versus fake trends, and having an ambitious vision.

Sam Harris - Death and the Present Moment
Atheist Foundation of Australia Inc · 2 HN recommenders
Sam Harris's talk at the 2012 Global Atheist Convention on the secular attitude toward death and living in the present moment, with a guided meditation element.

Sample Breakdown: Daft Punk - One More Time
TRACKLIB · 3 HN recommenders
A short Tracklib video visualizing the disco sample that Daft Punk's One More Time is built from. It shows how the track is composed from the original material.

Samsung SSD Awesomeness
ssdawesome · 3 HN recommenders
A Samsung-backed viral demo that builds a fast computer from 24 256GB MLC SSDs in a RAID 0 array and shows the throughput results.

Sand Castle Holds Up A Car! - Mechanically Stabilized Earth
Practical Engineering · 2 HN recommenders
Practical Engineering explains Mechanically Stabilized Earth, where layers of reinforcement make soil strong enough to hold heavy loads, shown with a sand structure supporting a car. It notes that MSE walls are everywhere in infrastructure.

Sand Flea Jumping Robot
Boston Dynamics · 2 HN recommenders
A short Boston Dynamics clip of the Sand Flea, an 11-pound RC-car-style robot that can jump about 30 feet into the air. An onboard stabilization system keeps it oriented in flight and for landings.

Satoshi Kon - Editing Space & Time
Every Frame a Painting · 3 HN recommenders
A video essay from Every Frame a Painting on animator Satoshi Kon and his editing style, which distorts and warps space and time. It draws on his four features and one TV series.

Saving Voyager 1! - Bruce Waggoner at !!Con 2024
!!Con · 4 HN recommenders
Bruce Waggoner of the Voyager team describes how engineers diagnosed Voyager 1's 2023 loss of telemetry and patched its flight software from 15 billion miles away. The talk covers the spacecraft's architecture and the scarcity of old documentation.