square knot

Hard Is Easy runs experiments to show that a correctly tied figure 8 knot is not hard to untie after loading. He shows how two knots that look similar can behave differently depending on how they are dressed.

Terry Moore's three-minute TED talk showing a better way to tie shoes, replacing the common granny knot with a square knot so laces stay tied.

A walkthrough of the Quake III fast inverse square root, explaining where the constant 0x5f3759df comes from. It covers IEEE 754 floats, the bit hack that approximates a logarithm, and a Newton's method refinement.

A short clip of Meskel Square in Addis Ababa, a busy crossroads where vehicles and pedestrians mix with few apparent rules. Filmed in 2013.

A short talk by Will Dayble of Squareweave arguing that you should design software as if the user were drunk: distracted, impaired in attention and vision, and prone to misreading. It is a user experience talk built around that framing.

An Intelligence Squared debate in which Will Self argues for Brave New World and Adam Gopnik for Nineteen Eighty-Four as the better dystopian warning. It includes acted excerpts and is chaired by Jonathan Freedland.

Joe Rogan interviews Peter Boghossian and James Lindsay, who describe their hoax papers submitted to academic journals in grievance studies. The conversation runs about two hours and covers academic publishing, ideology and victimhood culture.

An older 3Blue1Brown video on why topology matters, built around the inscribed rectangle problem. It walks through how tori and Mobius strips appear in the solution. The channel later replaced it with an updated version.

3Blue1Brown shows how pi emerges from prime numbers via complex numbers and sums of squares, culminating in a formula for approximating pi.

The official tour video of Miniatur Wunderland in Hamburg, the world's largest model railway. It shows the 1,300 square meter layout with trains, aircraft, cars and ships moving around.

Ubisoft procedural technical artist Etienne Carrier explains the Houdini-based tools used to build Far Cry 5's roughly 100 square km open world. It covers generating biomes, texturing terrain, freshwater networks, cliff rocks and vegetation placement.

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.

Kirsten Dirksen visits architect Gary Chang's 32 square meter Hong Kong apartment, which he has redesigned over decades. Sliding walls and transformable furniture turn it into 24 different room configurations.

Kirsten Dirksen visits the Providence Arcade, the oldest US indoor mall, which was converted into 225-square-foot micro-lofts classified as a rooming house.

Street interviews of over 50 passersby in Times Square, asked what a browser is. Many answers show people confuse browsers with search engines or the internet.

The first of Richard Feynman's 1964 Messenger Lectures at Cornell, 'The Character of Physical Law', covering the law of gravitation. Feynman traces the history from Kepler and Newton to the universality of the inverse-square law. The recording is an older one with weak audio.

A long Joe Rogan Experience podcast episode with psychologist Jordan Peterson and biologist Bret Weinstein, recorded during the controversy at Evergreen State College. They discuss campus politics, polarization, ideology and related social topics.

Joe Rogan interviews Jack Dorsey, then CEO of Twitter and Square, for about two hours. They discuss Twitter's value, moderation, misinformation and echo chambers.

Six minutes of street scenes from New York City in 1993, captured from a D-Theater HD DVHS demo tape that reused footage shot for the Japanese HiVision market. It shows Times Square and other sights in high-definition video.

Numberphile's Ben Sparks works through the physics of a car crash, showing how kinetic energy grows with the square of speed and why stopping distance climbs so quickly as velocity increases.

A tour of Christian Schallert's 24 square meter apartment in Barcelona, designed so that it looks like an empty cube until he builds the furniture he needs. Kirsten Dirksen shows how the space is transformed for cooking, sleeping and dressing.

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.