dance

Hungarian folk dancers from Sapientia University act out the quicksort algorithm step by step, with music. It is part of the AlgoRythmics series of sorting algorithms performed as dance.

Geoff Cumming uses a simulation to show how wildly the p value varies from one replication to the next because of sampling variability. He argues for estimation and confidence intervals over null hypothesis significance testing.

Vox's Joe Posner, with help from 99% Invisible, explains why bad doors are everywhere. It covers Don Norman's long-running complaint about doors and the idea that good design should not need instructions.

A Fifth Gear segment in which Tiff Needell tests autonomous emergency braking systems in the Mercedes S Class, Volvo V40 and VW up!. The cars are driven toward an inflatable dummy car to see how each system performs.

A short film about the Dervaes family, who grow over 6,000 pounds of food a year on a tenth of an acre near downtown Los Angeles. They grow more than 400 plant species, keep chickens and ducks, and get most of their food from the plot.

America's Test Kitchen tests eight carbon-steel skillets to find the best one, asking whether a single pan can replace stainless, cast iron and nonstick. It names a winner and covers how the pans perform.

Part one of an American Airlines training video presented by Captain Warren VanderBurgh on automation dependency. It grew out of a program on wake turbulence avoidance, and this restored version has the audio cleaned up.

MORE is Mark Osborne's Oscar-nominated stop-motion short about a joyless inventor in a drab, conformist society who yearns for his younger days. It won Best Short Film at Sundance in 1999.

Essential Craftsman follows up on his earlier video about a DIY approach to sleep apnea. It centers on forcing nose breathing during sleep with mouth taping and nasal strips, and says to seek medical guidance.

A solo performance of Steve Reich's Piano Phase, with one pianist playing both parts, recorded in 2004 with Reich in attendance. It is a 15-minute minimalist phasing piece.