init file

A short screen capture of SGI's File System Navigator (FSN, also called Fusion) running on IRIX 6.5 on an Octane. It shows the 3D file browser seen in Jurassic Park.

A short video of stretching and hand exercises for preventing and easing tendinitis and carpal tunnel syndrome, from a percussion teacher. The exercises were shown to him by a doctor.

Press conference footage in which the suspects in the 2007 Boston Mooninite bomb scare answer questions about 1960s and 1970s hairstyles.

A bot built by Robin Baumgarten plays Infinite Mario using A* path-finding, shown as a red planned path that updates as new obstacles appear. It won the Mario AI competitions and uses only on-screen information.

A scene from the film Disclosure showing its virtual reality interface, including a 3D file system visualizer.

A clip from the BBC Fun to Imagine series in which Richard Feynman is asked how magnets work and explains why 'why' questions depend on a shared framework of understanding and cannot always be answered in layman's terms.

A clip from Jurassic Park in which Lex says, "It's a Unix system, I know this," while navigating a 3D file system view.

A scene from Star Trek IV: The Voyage Home in which Kirk and crew rescue the injured Chekov from a 20th-century hospital.

Harvard physicist Eric Mazur explains how he realized his students were memorizing rather than understanding, and how he changed his teaching. He presents peer instruction and data showing improved student performance.

A Google Tech Talk by Steve Weis that introduces modern cryptography and its use in practice and at Google. It covers proofs of security and security definitions and a special topic. HN commenters treat it as a talk on verifiable electronic voting.

Jon Stewart appears as a guest on CNN's Crossfire in 2004 and criticizes hosts Tucker Carlson and Paul Begala for turning political debate into partisan theater that hurts America.

Economist-comedian Yoram Bauman delivers a humorous translation of Mankiw's ten principles of economics for the uninitiated. It was presented at the AAAS humor session in 2007.

The introductory lecture of Stephen Boyd's Stanford Convex Optimization I course (EE 364A). It outlines convex sets, functions and problems, and the course's coverage of least-squares, linear and semidefinite programming, duality and interior-point methods.

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 clip from Mr. Show season 3 in which characters insist that 24 is the highest number. It is a short absurdist sketch about counting.

A short clip of Bill Clinton's grand jury testimony in which he says it depends on what the meaning of the word 'is' is. It comes from questioning about Monica Lewinsky.

Footage of DC-X Flight 8 from July 1995 at White Sands, in which the Delta Clipper Experimental reusable rocket turned over into a re-entry profile and re-oriented itself for landing.