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Sandi Metz's RailsConf 2013 talk offers practical guidelines for deciding what to test and how, so tests stay cheap and stable. She argues for testing the public interface rather than implementation and using mocks appropriately.

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.

Will Wilson explains autonomous testing: using deterministic simulation and fuzzing, building on FoundationDB's approach, to test software continuously. It sets out the ideas behind his later company Antithesis.

John Hughes, co-creator of QuickCheck, talks about property-based testing of hard systems. He shows production examples where it found very low-level bugs, including issues in the CAN bus standard.

J. B. Rainsberger argues that large integrated tests are a scam: they are slow, fail opaquely, and give a false sense of coverage. He advocates focused collaboration and contract tests at boundaries instead.

Hillel Wayne's PyCon 2018 talk on testing beyond pytest and mypy. It introduces property-based testing with the Hypothesis library and design-by-contract with dpcontracts, and shows how to combine them with an existing test suite.

A doctor from Medlife Crisis explains in under three minutes why even a rich patient should not simply order every medical test, touching on pre-test probability and Bayesian reasoning. False positives make blanket testing counterproductive.

A short video of a Boeing 777 wing being tested to destruction, finally breaking at 154 percent of its designed limit load. The wing is flexed upward until it fails.

Matt Risinger demonstrates a blower door test on a house, using a fan to measure air leakage and find where air gets in and out. It shows how the test reveals the quality of the build.

Alen Ladavac of Croteam talks about continuous integration and automated testing pipelines in games, with case studies from The Talos Principle and Serious Sam.

Footage of a protest at the University of Toronto against a talk by Warren Farrell on men's issues, including protesters blocking attendees from entering. It is part of a series of videos on similar campus protests.

Footage of a crash test of a Boeing 727 deliberately crashed in the Mexican desert, shown from multiple angles inside and outside. It is taken from a Channel 4 documentary.

A short FIRE-published video of Yale students confronting a faculty member over a Halloween costume email in 2015. It documents a heated campus protest.

Archival 1978 Sandia footage testing shipping containers for spent nuclear fuel, including trucks ramming walls, a locomotive hitting a truck-borne cask and a rocket-propelled train crash, plus a fire test.

Ted Young of LightStep proposes trace testing, using distributed tracing data to unify testing and observability. The KubeCon-era talk argues for testing against trace data rather than treating tests and monitoring separately.

A short clip from Swedish magazine Teknikens Värld showing the 2016 Toyota Hilux nearly tipping over during the evasive-maneuver moose test.

Adam Savage's Tested spends a week with the Magic Leap One developer kit. They dig into the hardware, display technology, user experience and launch apps.

Will Wilson of FoundationDB explains how the team tested their distributed database using deterministic simulation. By running the whole system in a simulator with injected faults and reproducible seeds, they could find rare concurrency and network bugs.

SpaceX footage of the Grasshopper vehicle's 744 m test hop, filmed from a hexacopter that gets closer than earlier flights. Grasshopper was a vertical takeoff and landing rig built to test returning rockets to the pad.

Destin of Smarter Every Day goes behind the scenes at the 23andMe lab to show how genotyping works. He also discusses DNA testing and privacy.

GreatScott! tests ProLogium lithium ceramic batteries, a solid-state design. He measures their volumetric and gravimetric energy density, compares them to Li-ion and LiPo, and runs durability tests at the end.

A short Guardian clip of US Senator John McCain addressing protesters in Kiev's Independence Square in December 2013. He encourages them to continue peaceful protests for closer EU ties.

John Oliver's Last Week Tonight segment on standardized testing in American schools. It covers how tests drive school funding, the achievement gap, and the testing industry around companies like Pearson.

Linus Tech Tips tests whether USB Type-C connectors are more durable than Micro-B by repeatedly plugging and unplugging them. In the test, Micro-B failed at around 8000 insertions while USB-C kept working.

Declassified footage of 1950s tests of Project Orion, the nuclear pulse propulsion concept, including the Hot Rod prototypes flown on conventional high explosives. It shows the pusher-plate idea working in small scale.

The UK DVSA's one-minute guide to the hazard perception part of the driving theory test, covering when to click and how to score well.

Footage of IIHS tests of pedestrian automatic emergency braking on 16 midsize cars, with ratings from superior to basic or no credit.

Louis Rossmann reviews the Lenovo ThinkPad P50, covering build, thermals and throttling, then spills liquid on it to test the keyboard drainage and spill protection.

Ian Cooper's DevTernity talk revisits Kent Beck's original TDD ideas and shows where misunderstandings crept in. It argues tests should target behaviors through public interfaces rather than implementation details, so suites support refactoring instead of resisting it.

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.

Seven-minute footage of Fred Rogers testifying before a US Senate subcommittee in 1969 to defend federal funding for the new Corporation for Public Broadcasting. A skeptical Senator Pastore starts out abrasive and is won over during Rogers' brief, calm testimony.

A one-minute IIHS demonstration crash test of a 1959 Chevrolet Bel Air against a 2009 Chevrolet Malibu, showing how much better the modern car protects its occupants.

Erik Demaine's MIT 6.006 lecture introducing dynamic programming through Fibonacci numbers and shortest paths. It covers memoization, subproblems and optimal substructure.

The original invisible gorilla awareness test by Daniel Simons and Christopher Chabris, in which viewers count basketball passes and often miss a gorilla crossing the scene. It demonstrates inattentional blindness.

Peter Rizun and Andrew Stone present results of tests running 1 GB blocks on a Bitcoin test network at Scaling Bitcoin Stanford. The talk argues for big-block scaling and discusses its consequences.

A short Whitest Kids U' Know sketch, with Spanish subtitles, in which a man repeatedly announces he wants to kill the president. It satirizes how speech and threats are policed.

A Thoughtworks conversation among Martin Fowler, Kent Beck and David Heinemeier Hansson on whether TDD is dead. They discuss the tradeoffs of test-driven development, mocking and where TDD helps or hurts design.

Raymond Hettinger's PyBay 2018 keynote on preventing, finding and fixing bugs under a time budget. He covers testing practice, type annotation tradeoffs and the limits of coverage metrics.

InRangeTV's controlled mud test of an AKM, covering it in mud and testing whether it still fires, in a series that also tested the M1, M14 and AR-15.

A short unscientific fire test comparing a massive timber house with an ordinary house. It shows the wood chars and burns slowly while still holding together.