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David Beazley's PyCon India closing keynote, in which he live-codes a stack machine and grows it into an interpreter that runs WebAssembly, then uses it to play a Rust-written game. It requires no prior WebAssembly knowledge.

Shriram Krishnamurthi's PWLConf 2019 talk on the formal notion of expressive power of programming languages, based on Felleisen's paper. It explains how to tell when a feature adds power by whether emulating it requires global rewriting.

Clinical psychologist Stephen Ilardi argues depression is a disease of modern civilization and presents a lifestyle-based program to treat it without drugs. Topics include exercise, sunlight, omega-3s and social connection.

Clinical psychologist Dr Michael Yapko draws on forty years of practice and research to explain skills that help people recover from, and even prevent, depression. He emphasizes cognitive and social factors beyond medication.

James Hoffmann demonstrates his technique for a clean, sludge-free cup from a French press: stir, break the crust, wait, and carefully pour. It is a four-minute guide.

A US Air Force film on the Heavy Press Program, which built some of the world's largest metal forging and extrusion presses for aircraft, starting from German presses taken after WWII.

A CNBC clip of President Trump's August 2017 press briefing at Trump Tower in which he answers questions about the Charlottesville rally and says there were 'very fine people on both sides'. It is the unedited footage of the remarks.

Tim Minchin performs Prejudice, a comedic song about the power of words and the language used to abuse and demean.

Matt Parker's stand-up routine about spreadsheets, taken from the Festival of the Spoken Nerd DVD Full Frontal Nerdity. It features Excel used in unexpected ways, including turning an image into a spreadsheet.

Rare footage of Steve Jobs giving a 22 minute presentation about Apple in 1980, donated to the Computer History Museum. In it he explains the company name and the bicycle-for-the-mind idea for computers.

Jonathan Blow gives a talk on techniques for dealing with lack of motivation, malaise and depression, originally on Twitch. He discusses observing and understanding negative emotions and thoughts.

The question-and-answer session that followed Jonathan Blow's talk on dealing with lack of motivation, malaise and depression. It is hosted on YouTube as a mirror of a Twitch recording.

A DConf 2019 talk by Robert Schadek arguing that spreadsheets are the world's dominant programming language and that D can be used to replace them. It looks at spreadsheet quirks and then at techniques for moving away from them.

The Hydraulic Press Channel folds an A3 sheet of paper past the supposed seven-fold limit and then crushes it with a press. It is a short, quirky experiment.

Machine Thinking traces where mechanical precision comes from, from flat surface plates and the three-plate method up through lathes and early measuring tools. It is the first in a series on recreating the first micrometer.

John Oliver's Last Week Tonight segment on payday loans and predatory lending, covering how they trap borrowers and target the elderly and military. It features Sarah Silverman.

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.

Last Day of War is an award-winning CGI animated short by Dima Fedotov in which automated machines keep following orders and prepare a bomber after all humans are dead.

Bob Nystrom shows his process for hand-drawing the diagrams in his book Crafting Interpreters, from pencil sketches to tracing and inking. It is a time-lapse of the whole illustration workflow.

A demo of PREDATOR (TLD), a real-time object tracker that learns the appearance of its target and improves while it tracks. The technology was later developed commercially.

A short clip, from 2003, of Noam Chomsky going through crimes of post-WW2 US presidents. He argues that they would be indictable under the Nuremberg principles.

Hana Dusikova's CppCon 2018 talk presenting a C++ library that builds regular expressions from compile-time strings, using a C++20 feature. It avoids runtime parsing cost and covers implementation details, problems she hit, and benchmarks.

A lecture from the 1980s by linguist Stephen Krashen on how people acquire language. He explains his comprehensible input hypothesis for second-language acquisition.

A one-minute clip of an Atlas Agena rocket losing pressure on the pad and collapsing. The Atlas relied on tank pressurization for structural integrity, so a simple failure tore it apart.

A DEF CON 26 talk by investigative journalists and hackers on the fake science industry, with bogus conferences and predatory journals that give studies false credibility. It draws on a large investigation into the money behind them.

Bret Victor's closing keynote at UIST and SPLASH 2014 argues that our tools for thinking ignore most of human sensory and motor capability. He sketches representations that engage more modalities beyond screens and keyboards.

Felienne Hermans argues that Excel is the world's most popular programming language and shows how spreadsheets work as a pure functional language. She implements a few mathematical problems in spreadsheet formulas to illustrate why they are so powerful and approachable.

At DEF CON 27, Nina Kollars tells how buying Nespresso capsules on eBay led her to investigate fraudsters reselling goods bought with stolen credit cards. She describes her non-technical tracking and reporting efforts.

Jason Scott of Archive Team describes how a loose band of volunteers rushes to copy sites like Geocities, Friendster and Yahoo Video before their owners delete them. The talk covers the tactics they use and the argument that this data is history worth saving.

Machine Thinking tells the story of the Cold War Heavy Press Program, the giant forging presses that make parts for aircraft, missiles and turbines.

Tom Scott explains why confetti and snow wreck video quality, using interframe compression and bitrate. He demonstrates it live by changing the quality on screen.

Nada Amin's Strange Loop talk on programming languages that build on themselves, centered on towers of interpreters and nestable interpretation in Scheme. She shows how interpreters can be stacked and collapsed.

A 1990 Lotus sales demo of Improv, a spreadsheet built for the NeXT computer that rethought the grid with named categories and multiple views. The uploader, who tested it at Price Waterhouse, presents it as an early, innovative vision of the spreadsheet.

A Jimquisition episode examining the human cost of predatory videogame monetization, focusing on loot boxes and microtransactions. It features testimonials from people harmed by gambling-style game mechanics.

Psychologist Irving Kirsch gives a distinguished lecture on antidepressant trials and the placebo effect. He argues drug-placebo differences are small outside severe depression.

Tom Scott explains phatic expressions such as hello, thank you and how are you, which carry social meaning rather than information, and why replies like no problem can seem rude to some people.

Sal Khan interviews Elon Musk in a 2013 Khan Academy entrepreneurship series. Musk discusses PayPal, rocket efficiency and reusability, and how he approaches education and learning.

Dan Gelbart shows his home-built air bearing CNC lathe and grinder, which reaches about 1 micron accuracy. He demonstrates the machine and its parts.

A Technology Connections video weighing LED streetlights against high pressure sodium lamps, covering efficiency, color, cost and light pollution. It is a follow-up to his earlier explanation of why street lights are orange.

Jon Bois tells the story of a 2008 bodybuilding forum thread in which users spent a weekend arguing over how many days are in a week. It is episode six of his Pretty Good series for SB Nation.