free fall

The first lesson of MangoJelly's FreeCAD 0.20 beginner course, covering setup, preferences and navigation. The series teaches fundamentals through complete workflows such as sketching, Part Design and STL export.

The introduction to MangoJelly's beginner course for FreeCAD 1.0. The course teaches solid modeling with the Part Design, Sketcher and Part workbenches.

Rowan Atkinson's speech at the launch of the Reform Section 5 campaign in Parliament in 2012. He argues against criminalizing insulting words and for answering speech with more speech.

The first episode of Milton Friedman's 1980 Free To Choose series, on how markets and voluntary exchange organize economic activity and the price system. It includes visits to Hong Kong, the U.S. and Scotland and a panel discussion with critics.

Christopher Hitchens delivers a speech defending freedom of speech, including the right of audiences to hear offensive speakers and a take on the fire-in-a-crowded-theatre line. It is framed around the Charlie Hebdo attack.

A 2007 Google Tech Talk in which Cliff Click of Azul Systems presents a lock-free concurrent hash table that scales to 768 CPUs. He explains why it is correct by reasoning in a different way than usual happens-before and memory-order arguments.

Eben Moglen's re:publica 2012 talk argues that media which spy on and data-mine the public threaten freedom of thought, and that free technology and free culture are needed to protect it.

Rowan Atkinson speaks against the word 'insulting' in the UK Public Order Act, as part of the Reform Section 5 campaign. He argues for robust free speech and against the slippery slope of criminalizing offense.

A 1997 Noam Chomsky talk at Northeastern University about the gap between free-market rhetoric and practice. He argues that business relies heavily on state intervention, and he discusses trade, NAFTA and labour versus capital mobility.

Eben Moglen of the Software Freedom Conservancy speaks at the 2009 Law of the Commons Conference about free and open software as a model for a new intellectual commons. The talk covers the legal and social case for sharing knowledge.

Jordan Hubbard, FreeBSD co-founder, discusses where FreeBSD might go over the next decade at MeetBSD California 2014. He draws on his Apple Unix experience, including bringing launchd-style init ideas to FreeBSD.

A short clip of Richard Stallman singing the free software song, recorded during a visit to Ecuador.

Not Just Bikes visits the Toronto Islands, home to Canada's only car-free neighbourhood. He explains the waiting list and strict ownership rules and asks why more such places aren't built.

Highlight clip from the 2021 Free Expression Awards honoring YouTube CEO Susan Wojcicki. The video became notable for its overwhelmingly negative like/dislike ratio.

Richard Stallman's TEDxGeneva 2014 talk describing how nonfree programs give companies control over users and what users can do to regain control. It introduces the free software movement and the four freedoms.

Neuroscientist Karl Friston gives a 15-minute talk on the free energy principle, covering Markov blankets, Bayesian model evidence and global brain theories.

Netflix engineer Drew Gallatin explains why the company runs FreeBSD-current on its CDN. He describes the team, how they track upstream, their contributions and performance milestones, and a bug causing a 20% performance regression.

Matt Ahrens presents the FreeBSD Foundation sponsored RAID-Z Expansion project for ZFS at the June 2021 FreeBSD Developer Summit. It explains how a RAID-Z vdev can be grown by adding disks on the fly.

David Crane, designer of Pitfall for the Atari 2600, gives a GDC 2011 postmortem on the game's design challenges. He covers how he fit a large world into the console's tiny memory. The session ends with Q&A.

Eben Moglen speaks at NYU in 2010 about freedom in the cloud, arguing that centralized services and handing over personal data and server logs erode privacy and freedom. The talk lays out the motivation for FreedomBox, a personal server for your own data.

Timothy Cain's 2012 GDC postmortem of the original Fallout, covering how he helped build the game and set the template for open-world RPGs. He talks through production, design and programming decisions.

Rick Reed of WhatsApp speaks at MeetBSD about running a messaging service on FreeBSD and Erlang at huge scale. He covers the stack, tuning and the challenges of millions of connections per host.

Builder Matt Risinger freezes water-filled copper and PEX piping capped with SharkBite fittings to see which survives. The video compares how each pipe type handles freezing.

Hobbyist Wesley Kagan shows his Miata running and driving with a homemade version of Koenigsegg's freevalve camless valve technology. The build uses open CAD files and code and he describes it as an ongoing work in progress.

A ten-minute clip of Noam Chomsky on the Faurisson affair and free speech. He argues that supporting free speech means defending views you despise.

Technology Connections explains how refrigerator and freezer design affects energy use, using chest freezers to show why top-opening designs and layout choices matter. It includes thermal-camera footage of cold air spilling out of upright units.

A two-minute clip from a 1979 Phil Donahue interview in which Milton Friedman makes the free-market case for taxing pollution. He treats pollution as an externality that can be given a price.

Scott Long of Netflix presents the architecture of the OpenConnect content delivery network at NYCBSDCon 2014. He explains why Netflix runs FreeBSD 10 on its appliances and what the future holds.

Gleb Smirnoff explains why Netflix built its own CDN on FreeBSD and NGINX, and how Netflix and NGINX Inc. collaborate on the software. It is a conference talk about open-source choices for video delivery.

Netflix engineer Drew Gallatin explains how Netflix serves TLS-encrypted video at 400Gb/s from a single FreeBSD server. He covers NUMA, kernel TLS, hardware TLS offload and the memory bandwidth and PCIe bottlenecks they hit.

Mike Monteiro's CreativeMornings talk on getting paid for creative and freelance work, covering contracts, working with lawyers, and refusing to work for free. It is delivered with blunt humor.

Mike Monteiro's Creative Mornings talk "Fuck You, Pay Me" with his lawyer Keith Levine, on contracts, scope creep and making sure designers and freelancers get paid. This copy has Portuguese subtitles.

Veritasium explains, with expert input, that in general relativity gravity is not a force and objects follow straight paths through curved spacetime, including why standing on the ground means you are accelerating.

Kurzgesagt argues that Facebook's claimed 8 billion daily video views are inflated by freebooting, meaning re-uploads of creators' videos. It describes how this harms independent creators.

Charlie Rose interviews Sir James Goldsmith in 1994 about the coming GATT free-trade agreement. Goldsmith predicts that global capital mobility will upset the balance between capital and labor.

A 2016 conference talk by a mobile game CEO on the tricks of free-to-play monetization, including player profiles and how to target high-spending whales.

A 2015 interview in which physicist Freeman Dyson, then 91, argues that global warming concerns are exaggerated, that CO2 is beneficial and that climate models oversimplify complex systems. It is posted on a channel that opposes climate consensus.

A CBS News (60 Minutes) profile of free solo climber Alex Honnold, who scales sheer rock faces without ropes. Lara Logan reports on his climbing and his apparent lack of fear, including his Half Dome ascent.

A Wendover Productions explainer on the political agreements, from the Chicago Convention onward, that determine which airlines can fly where. It lays out the five freedoms of the air.

A short film of Alex Honnold free soloing El Sendero Luminoso, a 2,500-foot route in El Potrero Chico, Mexico, in a little over three hours with no rope. It was made by The North Face with climbing footage and music.