zero-knowledge

Apple's late-1980s Knowledge Navigator concept video, produced under John Sculley, showing a professor using a tablet-like device with a conversational software agent. It envisions hypertext, touchscreens and voice assistants.

Apple's 1987 Knowledge Navigator concept video imagines a conversational voice assistant, multi-touch tablet and video calling used by a professor. It was made years before the graphical web existed.

Apple's 1987 Knowledge Navigator concept video, made for John Sculley's EDUCOM keynote, showing a professor conversing with a tablet-based AI assistant.

Tom Scott races a London black-cab driver who has memorized The Knowledge against a phone GPS across the city, comparing local expertise to navigation software.

Destin of Smarter Every Day learns to ride a bicycle whose steering is reversed, taking about eight months, and compares it with how his young son learned much faster. It illustrates knowledge versus understanding and brain plasticity in adults versus children.

Smarter Every Day host Destin Sandlin tries to hover a helicopter and finds it very hard. The video shows how the constant coordinated corrections across several control axes feel at first and how learning makes them automatic.

A short clip of the Sprint anti-ballistic missile, which was launched from a silo and reached Mach 10 within seconds. Its nose and skin glow white hot from aerodynamic heating.

A short video of five people carrying a live, running web server across the city by public transport to a new datacenter. It stayed powered and connected to the internet the whole way, so there was no downtime.

A short Princeton CITP video describing cold boot attacks, where encryption keys remain in DRAM after power loss and can be recovered. It covers the attack against disk encryption such as BitLocker, FileVault and TrueCrypt.

A FIDO Alliance demo with Google and Microsoft engineers showing passkeys working across operating systems, browsers, and devices. It walks through registering and signing in on new devices.

Linus Tech Tips tests a Chinese mining-only Nvidia card, hacked with a modified driver so it can render games and output video through an integrated GPU.

SethBling uses Super Mario World glitches to inject and run Flappy Bird code on an unmodified SNES, entering it purely with controller inputs. It was the first time a human completed this kind of exploit by hand.

Stephen Wolfram gives a 13-minute tour of the Wolfram Language, a symbolic, functional programming language with a built-in knowledgebase. He demos querying large datasets, interactivity and deployment.

A 1975 live demonstration of the APL language by Imperial College professor Bob Spence, showing a REPL on a modified typewriter terminal and APL's appeal to non-programmers.

Mike of mikeselectricstuff shows his heavily modified old BBC Micro system in a 28-minute tour of 8-bit hardware archaeology.

Mark Rober builds a glitter-bomb booby-trapped package to take revenge on porch pirates, filming the thieves' reactions. Some reactions were later acknowledged as partially staged.

Cosmo's 22:38 Ocarina of Time speedrun, performed live at AGDQ 2013. The runner uses a complex exploit to skip much of the game.

A Primitive Technology episode in which the creator builds a bow-drill-driven bark fan to blow air into a fire, using only natural materials. It shows the progression from fanning a fire by hand to a rotary forge blower.

A short demo of Automaton 2000 Micro, a StarCraft bot built in Blizzard's World Editor that splits marines perfectly against banelings. It shows inhuman unit micromanagement with zero losses.