one-way functions

Daniel Stone, a longtime X and Wayland developer, explains at linux.conf.au 2013 why X11's design became untenable and what motivated Wayland. The talk walks through X's history and accumulated cruft.

X.Org developer Daniel Stone explains the history and technical limits of the X Window System and why Wayland was created, debunking myths from forum comments. He covers topics such as network transparency and blocking calls.

Waymo's 2017 announcement that its fully autonomous vehicles are test-driving on public roads with no one in the driver's seat. It gives a short overview of the project's history and plans.

A short Art of the Problem clip explaining Diffie-Hellman key exchange, using a paint mixing analogy for one-way functions and touching on modular arithmetic and discrete logarithms.

Mark Rober sets up elaborate glitter-bomb traps to go after phone scammers, working his way up their chain of command, and ends with a scammer being arrested. He also points viewers to fraud-reporting resources and to scambaiter Jim Browning's investigation.

Andrew Rota of Wayfair argues at React.js Conf 2015 that React and native Web Components complement each other. He shows how they can be combined for complex web applications.

JJRicks rides a driverless Waymo in Phoenix when it gets confused by traffic cones, blocks traffic, and evades the support vehicles sent to retrieve it. The episode is one of a long series of rider-view Waymo videos.

Tom Scott explains for Computerphile why handling time and timezones in code is so hard, walking through a simple web app that computes how long ago something happened. It covers the quirks of timezones and calendars and ends in an exasperated rant.

Veritasium explains why the one-way speed of light has never been measured, only the round-trip speed, since measuring it requires synchronized clocks that assume the answer. It explores the implications for relativity.

Part one of Montemayor's animated-map documentary on the Battle of Midway, told using only the information available to the Japanese side. It focuses on Nagumo's dilemma.

Real Engineering explains how Zipline built a drone delivery network for medical supplies in Rwanda. It covers the fixed-wing drones, catapult launch, parachute drop and the logistics behind the service.

Mark Rober visits Zipline and looks at its autonomous delivery drones, including medical and blood deliveries in Rwanda. He demonstrates how the drones' propeller design and cable-lowered delivery pod make them quiet and precise.

An animated short film of Tanya Davis's spoken-word poem 'How To Be Alone', illustrated by Andrea Dorfman. It gently argues that being alone can be embraced and enjoyed.

Wendover Productions explains why drone delivery has not become the future once promised. It covers no-fly zones, costs and the difficulty of the final drop-off.

Guitarist Jim Lill methodically tests what in an electric guitar affects its tone, swapping parts on a partscaster and even trying a 2x4 body. He finds that wood and construction matter far less than people assume.

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.

Louis C.K. on Conan explains why he won't give his kids cell phones. He argues that phones keep people from sitting with sadness and being alone with their thoughts, and that kids lose empathy when they cannot see another person's reaction.

An animated documentary by Paul Grignon explaining how modern money is created through bank lending as debt. This is a combined upload of the revised 2009 edition.

An 86-minute Milton Friedman talk arguing that inflation is a monetary phenomenon caused by money supply growing faster than goods, and that the cure is less government spending and money printing.

Ben Felix explains how central bank money creation and quantitative easing actually work, and what they do and do not imply for asset prices and currency. He addresses the common belief that the Fed prints unlimited money and props up markets.

Kurzgesagt explains why humans feel loneliness, its evolutionary role, and how modern life can turn it into a harmful downward spiral. It cites research and offers ideas on what to do about it.

Luke Wagner of Fastly explains what a WebAssembly component is, how it relates to familiar concepts, and what the Component Model enables. It emphasizes security, composability and modularity.

An excerpt from Steve Jobs's January 2007 Macworld keynote in which he introduces the original iPhone. It shows the pitch of a phone, music player and internet communicator, along with the live demo.

Part 4 of the BBS: The Documentary series, covering FidoNet, the amateur network that linked dial-up bulletin board systems together to relay messages and files worldwide.

A Wendover Productions documentary-style video on how Zipline delivers blood and medical supplies by drone in Rwanda. It covers the catapult launch, parachute drop and the logistics behind it.

The full January 2007 Macworld keynote where Steve Jobs unveils the first iPhone. It covers the touch interface, multitouch gestures, the browser, maps and the pitch as an iPod, phone and internet communicator.

Tom Scott explains how in Norway and other Nordic countries tax returns, and so individual incomes, are public. He looks at the effects of wage transparency and whether it is a good idea, with sources listed in the description.

A short Bank of England video accompanying its 2014 Quarterly Bulletin article on money creation. It explains that most money is bank deposits and that commercial banks create new money by making loans, which simultaneously create matching deposits.

Second half of a 2017 Computer History Museum live event in which former Apple software chief Scott Forstall is interviewed by John Markoff about creating the original iPhone. He tells stories about Steve Jobs and the team and the origins of the iPhone software.

A two-minute satirical short film in which a woman leaves her phone at home and notices how everyone around her is absorbed in their screens. It became a viral comment on phone distraction and social disconnection.

A linux.conf.au 2013 talk by a Wayland developer who previously worked on X, telling the history of X and why Wayland was created. It covers X's hardware abstraction and architecture and why they became problematic for modern graphics.

Sal Mercogliano of What's Going on With Shipping? discusses a debate between the Center for Maritime Strategy and the Heritage Foundation over whether the Jones Act helps or harms American shipping and national security.

An episode of the Well There's Your Problem podcast on five-over-one buildings, wood-frame floors atop concrete bases, with engineering background and some oil industry news. It is long, rambling and has NSFW language.

Soup Emporium's deep dive argues that Yellowstone is not a ticking timebomb. It goes through uplift and subsidence, earthquakes and what the caldera really is, to rebut supervolcano doom claims.

A short 3Blue1Brown primer on exponential and logistic growth, using early COVID-19 case data to show how epidemics grow and eventually level off. It explains why small changes in growth rate make enormous differences in outcomes.

A DEF CON 23 talk on researching whether a commercial quadcopter could be forced to land by interfering with its GPS signal, inspired by a neighbor's kid's drone. It covers the research and the legal and technical issues encountered.

Red Bull and the Dutch Drone Gods follow Max Verstappen's RB20 F1 car around Silverstone in a single FPV shot using a custom drone that accelerates to 300 km/h in about four seconds. The video also covers the year of development behind the drone.

John Conway talks in a short Numberphile interview about his mixed feelings toward the Game of Life, his most famous invention. He says he is not especially pleased that it overshadowed his other work.

Andreas Antonopoulos argues that money has a fourth function beyond store of value, medium of exchange and unit of account, which is as a system of control. He covers the history of money and why it does not flow freely.

A short clip from Breaking Bad in which Saul Goodman teaches Jesse Pinkman how a cash-heavy business like a nail salon can launder drug money.