The Eternal Doorman

Carlo Cipolla was a professor of economics at UC Berkeley. There is a copy of The Basic Laws of Human Stupidity on the Internet Archive . Subscribe to Academy of Ideas . 

Following up from  Georg Greve on Self-Sovereign Identity in Swiss Healthcare , ... I found this video which is quite well explained. There is a DNS "sub-protocol" for IPFS called DNSLink which can be used to redirect a web site lookup to an IPFS gateway. See  Publishing my Website on IPFS Update (2021-03-04): Up until today this blog was running on IPFS, hosted on Pinata, and used GitHub actions to publish updates. Today I switched my blog to be hosted on [Amazon] S3 . I wasn't able to find an easy way of getting SSL certificates installed while redirecting my website through an IPFS Gateway. I'm sure this is possible - and I saw that Cloudfare helps with this - but my website was already setup in AWS Route53, so transitioning to Cloudfare was an additional hurdle. The simplest method was to switch to using S3 to host my static content - and this also hedges against future complexity that I might run into. (I am still a bit of a web developer n00b after all). No h...

See  https://www.vereign.com/ . This made my day.  Somebody understands the problem! Subscribe to FOSSASIA . 

See  https://faircompanies.com/ . Subscribe to Kristen Dirksen .

See  https://www.researchgate.net/profile/Unto-Laine . Subscribe to PBS Terra .

It has a "level out" button, and an autopilot that kicks in as soon you exceed some reasonable maximums. I wonder how it handles one wing stalling on take-off, ... Subscribe to Blancolirio .

Shit is just not working like it should! 43:04 on supply-chain attacks on crypto-currency software. Subscribe to Defensive Security Podcast . Subscribe to Level1 Techs . Subscribe to Amy Macdonald .

It's the sort of thing you'd want to schedule at midday, and before the Summer holiday influx of Brits and Germans arrives. Subscribe to RTÉ News .  

See https://laurapausini.lnk.to/turista Subscribe to Laura Pausini .

He says Newsom is a "product of the Getty family"! His book: Failed State: A Portrait of California in the Twilight of Empire . Kim has moved out of CA! Subscribe to Kim Iversen .

You can use blockly to define new blocks,...  This was listed on YouTube on 2 December, 2016. That was over a year before I started going about how someone should do something just like this! And such is Google, I didn't get to hear about it until 8 years had passed. So much for recommendations! Google: mission is failing hopelessly. See  Alice's Adventures on the Internet, Continued, ... She's really smart! Subscribe to Ruth Leopold .  See  Blockly Developer Tools  and this video Here's his "The Making of,..."  video: ten years of Blockly history:  Subscribe to Neil Fraser .  2018 Google talk which shows that they don't see you can go up: witness the discussion about palettes and themes at the end ( 16:10 ). Those are just varous different languages for describing sets of colours. And you need another language to connect different sets of colours to different syntactic constructs. Subscribe to Google Tech Talks .  Now look what the people a...

I just found this book on arXiv: https://arxiv.org/abs/1803.05316 posted on 12th Oct 2018.  It was referenced in this blog post Matrix calculus for Milner's Bigraphs . Here's a talk by Emily Riehl on the Yoneda Lemma in the Category of Matrices:  Subscribe to Applied Category Theory .

Illustration from Project Gutenberg's The Tenniel Illustrations for Carroll's Alice in Wonderland by Sir John Tenniel . This is a follow-up to Alice's Adventures In The Wonderland Wide Web . This time she goes down the rabbit hole of WebRTC which stands for Web Real-Time Communication : "a free and open-source project providing web browsers and mobile applications with real-time communication (RTC) via application programming interfaces (APIs). It allows audio and video communication and streaming to work inside web pages by allowing direct peer-to-peer communication, eliminating the need to install plugins or download native apps" and TURN which stands for Traversal Using Relays around NAT (and where NAT stands for Network Address Translation ). I discovered this while trying to find out how Raspberry Pi implement their Raspberry Pi Connect which, to me, sounds like a security nightmare that would be hard to wake up from, ... I found this blog post by R.S...

It didn't work because the mass of the HP equipment stack on top of the clocks was not evenly distributed between them? Usually the power-supplies are on the same side of the cases, so maybe that's why the C-field ( 9:24 ) was drifting? See The Action Lab - Ulexite (How Does Television Stone Work?) Here's the HP59501B DAC repair video: Subscribe to CuriousMarc . 10:11 It's interesting to hear how Hafele and Keating handled the clock drift in their aeroplane. Jeff Geerling did an interview with Dr Demetrios Matsakis who worked for the U.S. Naval Observatory. See  https://www.masterclock.com/modern-timekeeping.html . Subscribe to Jeff Geerling .

From from her  upcoming album 'Flying with Angels' - out May 2nd See  https://svega.lnk.to/Flying_With_Angels . She's touring the US, Europe and Britain this year. See https://linktr.ee/suzannevega . Subscribe to Suzanne Vega .

See  https://www.hockinghills.com/old_mans_cave.html and the story here :   Then she went to Kentucky, ... See Laura Went to Washington D.C. to See the Cherry Blossom . Subscribe to Goldilocks .

This is a really good talk. See Jade on The Busy Beaver Problem . Subscribe to Harvard CSMA .

I don't get it, but the first bit is funny.  She does live shows in Canada:  https://www.julienolke.ca/ Subscribe to Julie Nolke . 

See Cordillera de Talamanca on Google maps. Subscribe to Crime Pays but Botany Doesn't .

Subscribe to Forbes . And another missing testimony: See Oliver Stone opening statement at JFK assassination hearing and Laura Went to Washington D.C. to See the Cherry Blossom . Subscribe to  Helmer Reenberg .

Somebody talking about a course called cs232 run by Udacity in 2012 information about which is no longer available. Subscribe to Udacity . Neil Green talking at JSConf in 2014 Subscribe to  JSConf . Miro Spönemann talking about Langium and DSLs at a conference called OCS in 2024: Langium is based on something called Language Server Protocol : "LSP was originally developed for Microsoft Visual Studio Code and is now an open standard. On June 27, 2016, Microsoft announced a collaboration with Red Hat and Codenvy to standardize the protocol's specification." Subscribe to Eclipse Foundation .

The project is to write a simulation of Francis' Galton's physical machine to describe the Central Limit Theorem , but modelling some of the physics of falling balls colliding with pins rather than just assuming a binomial random walk down the pins. See the lecture notes at https://vanhunteradams.com/Pico/Galton/Galton.html . It turns out that the parameters can actually change the distribution from a binomial one to something more like a uniform one, or a bimodal one! For more on how physicists think about problems, see Angela's physics problems video in Angela Collier, Anne L'Huillier and Jacob Barandes on Physics . Here's the playlist of all the lectures: See the ECE 4760/5730 course page at https://ece4760.github.io/ . Subscribe to V. Hunter Adams .

... apparently it's being called an "Industry Standard" design tool. So I signed up for a free account to see how it works. I am not encouraged. The first thing it asks you  is "What do you want to do today?" and it offers three choices. Design a web page, a mobile app or a desktop app. Wouldn't you want all three at once? And then your "dev mode" would make sure they all implement consistent UI and business logic, ... but I don't know what "dev mode" is, because it's not in the free version. Good luck anyone who uses Figma, ... you're locked-in to a pile of crap. How much did they make you pay for that? £18 a month. See Louis Rossmann Talking About Shrinkflation .  

People on reddit amazed at how anyone can afford to drink $50 worth of açaí in one bowl! See Breakfast in The Amazon and Getting Around La Paz . Subscribe to Ribeirinha da Amazônia Fabiola Alves Pedrosa .

Here's a playlist of SciFi shorts with an environmental angle. One that's not always that good though! Subscribe to Dust .

It's because the global economy actually went tits-up 2008 and nobody believes it yet, but ever since it's been an increasingly implausible fiction. Subscribe to FUTO .

See  https://developer.nvidia.com/cuda-zone and Laurie Showing How You Can Program NVIDIA GPUs Using Assembler . Subscribe to Computerphile .

"Better together: Finding community in the deep sea for Earth Day" Subscribe to MBARI . Subscribe to Oregon Zoo .

See her  https://linktr.ee/lauriewired Subscribe to Laurie Wired . 

Most of what the machines in these data centres compute is unnecessary: Subscribe to Bloomberg . 

I was looking at the data sheet for the Rockwell 6502 and I noticed that there is a Set Overflow line labelled SO: I found this discussion on retrocomputing.stackexchange.com : What happened to the SEV instruction on the 6502? which explains how some people used this: The answer is that the 6502 has a specific input pin, SO, which can be used by external hardware to set the overflow flag. The intention is low-latency hardware interfacing — the programmer enters a spin loop like: CLV .here: BVC .here The worst-case latency there (assuming no page jump) is three cycles — after two cycles the entire BVC has been read and the decision is made to branch, the overflow flag is set but just too late, an extra cycle is spent performing the branch and then two more rereading the BVC. That's substantially faster than even the fastest IRQ, which starts at 7 cycles. The main example of usage I'm aware of is the C1540 / 1541 disk drive where overflow can be enab...

Then she went somewhere else, and then she went to Georgia, ... That was recorded on March 27-29. See Henry Segerman on Mathematics and Art . Subscribe to Goldilocks . See  Oliver Stone opening statement at JFK assassination hearing and Oliver Stone at the End of the House of Representatives Hearing on the Assassination of John F. Kennedey .  Subscribe to Warner Bros. Rewind .

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From the album Loose Talk:   https://lnk.to/bf-loosetalk . Subscribe to Bryan Ferry .

This is great. Much cheaper than taking my daughter to fucking London to a concert in an O2 theatre.  Wow, Warren's violin on O Children is something else! But it's a bit sad to hear about that poor girl who died in a bedsit on Jubilee Street. 53:47 This rendition of Tupelo is something special, wow! The whole thing is brilliant. What a show! Subscribe to ARTE Concert .

If you have £18 to spare, you can see them in a Cinema near you, soon . Subscribe to Pink Floyd .

Keep diggin' guys, there's gotta be a hole in here somewhere! Subscribe to  Defensive Podcasts .

See  Low Cost Logic Analyzers and Fixing Weird Retro Tech and https://www.clockworkpi.com/ . Subscribe to Taylor & Amy . They also made a more recent version of that called uConsole for $195 but the lead times on orders were several months:  Subscribe to sn0ren .  Subscribe to Townes Van Zandt .

See  The Plane That Will Change Travel Forever, ...   Mr. Mister - Broken Wings and Stratospheric UAVs . Subscribe to Bacca Yaro and Roboloon .

This is brilliant! Subscribe to  Ari Frenkel Films .

This was six years ago. Apparently he's gone into business with this stuff: https://www.strangesci.com/ All those record producers like Tim Gilles and Sylvia Massy lining up outside wanting him to make stuff for them!  In part 3 he extracts IR filters that have a similar characteristic so you can get a digital approximation without even setting foot in IKEA: Subscribe to LeoMakes .

Continuing on the "how to know when you're lost in complexities of your own making" thread... these guys have only 555 subscribers on their YouTube channel. See https://defensivesecurity.org/ . On Oracle's breach which still didn't actually happen: Some more here: 20:00 Interesting bit about non-human credentials in GitHub repos. Subscribe to Defensive Podcasts . Ali on what Oracle said See this April 16, 2025 post: CISA Releases Guidance on Credential Risks Associated with Potential Legacy Oracle Cloud Compromise on https://www.cisa.gov . Subscribe to Hak5 .

I made a mistake because I didn't have my glasses with me when I went to buy some stuff from the supermarket.

See The Level1 Links With Friends Show April 18 2025: Dire Wolves, Demystified . Subscribe to Level1Links With Friends .

I would've loved to have seen this when it was broadcast. I missed it. See the book Jim Blinn's Corner and https://www.jimblinn.com/ .  Subscribe to BBC Archive . ACM SIGGRAPH 2017 History of the JPL Computer Graphics Lab Subscribe to ACMSIGGRAPH . He has an interesting video in his Dropbox called How to Make a Planet . See the texture maps and other links on https://www.jimblinn.com/magrathea . 1981NASA Animation of Voyager 2 Flyby of Saturn 1986 NASA Animation of Voyager 2 Flyby of Uranus Subscribe to Ian Regan .

It looks like a sudden catastrophic failure of the main rotor transmission. Update: Another update audio from somewhere: Subscribe to Blancolirio . NTSB Debris Inspection Subscribe to NTSB .

36:30 There's a great show of Jeff Bezos' true personality here. See William Shatner: My Trip to Space Filled Me With ‘Overwhelming Sadness’ . It was among the strongest feelings of grief I have ever encountered. The contrast between the vicious coldness of space and the warm nurturing of Earth below filled me with overwhelming sadness. Every day, we are confronted with the knowledge of further destruction of Earth at our hands: the extinction of animal species, of flora and fauna . . . things that took five billion years to evolve, and suddenly we will never see them again because of the interference of mankind. It filled me with dread. My trip to space was supposed to be a celebration; instead, it felt like a funeral. I learned later that I was not alone in this feeling. It is called the “Overview Effect” and is not uncommon among astronauts, including Yuri Gagarin, Michael Collins, Sally Ride, and many others. Essentially, when someone travels to space and views Earth from ...

Subscribe to Level1 Techs .  See https://github.com/Ian-Grant/2PI502 for the code Claude wrote.

See El Dr. Gusman's Logic Analyzer from this Hackaday post: Pico Logic Analyzer Gets New Version from December 12, 2024: ... and then he makes a wireless 48 channel logic analyzer that just plugs into the back of a ZX Spectrum and allows you to remotely dump a trace and decode the Z80 machine operations: You can order them pre-assembled from  https://www.pcbway.com/project/shareproject/LogicAnalyzer_V6_0_cc383781.html and you can tip El Doctor Gusman at https://ko-fi.com/U7U117LYDY . He explains on the GitHub discussion here how he worked around the Raspberry Pi RP2350 Pad Leakage problem (Errata E9). Subscribe to Happy Little Diodes . Maybe someone will adapt this design to produce stand-alone bench instrument: See  https://www.clockworkpi.com/product-page/picocalc . Subscribe to sn0ren . Then for the kinds of problems that really old Commodore machines produce when their ROMs get tired: see Ken's blog post A tricky Commodore PET repair: tracking down 6 1/2 bad chips : ...

I feel I ought to listen to this, even though it will make me feel sick. Don't use Meta products. On Facebook and Instagram doing "behavioural targeting" of adverts at young mothers: He won't because he's a sick fuck: Subscribe to Forbes .

She is awe-inspiring! Subscribe to Julie Nolke .

This has some penetrating insights into the way the laws came about! Ouch! This whole thing applies also to scientific publications. See the Forum at https://forum.level1techs.com/t/consumer-bill-of-rights-draft/229124?u=autumn . See also this short 80 page book Against Intellectual Property (2001) by N. Stephan Kinsella . Subscribe to  Level1Techs . Really annoying YT App bug stealing my screen space: You can't see it, but there's a white bar obscuring the bottom part of the video display when it's in full-screen on my phone. 

Get yours here:  https://eater.net/6502 . Subscribe to Ben Eater .

 ... and how it got hacked. Subscribe to Low Level .

This study was based on a survey of the forests in Barro Colorado Island in Central Panama which is about the only place where anyone has done a systematic study of the effects of lightning on a tropical forest. See The contributions of lightning to biomass turnover, gap formation and plant mortality in a tropical forest by Evan M. Gora, Phillip M. Bitzer, Jeffrey C. Burchfield, Cesar Gutierrez and Stephen P. Yanoviak and How some tropical trees benefit from being struck by lightning : evidence for Dipteryx oleifera and other large-statured trees by Evan M. Gora et al . Subscribe to Anton Petrov .

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See https://processing.org/ . I'd never heard of this before. It started in 2001. They have a very slick web interface which allows them to present a video in an interactive IDE-type environment on the web page and synchronise events in the video to changes in the code in the IDE. See  https://hello.processing.org . See  Some Ideas for a Hardware Project, ... I am thinking about how to emulate this LCD display panel:  Subscribe to Ben Eater . See Hitachi HD44780U (LCD-II) (Dot Matrix Liquid Crystal Display Controller/Driver) .  

It starts in Campo, CA just ten miles along the Mexican border fence from Tecate and she crosses the San Diego Arizona railroad. Here's the playlist for her five days. It was really great to watch: Subscribe to Goldilocks .

See  Chumash Painted Cave State Historic Park and https://the-lookout.org/ . Subscribe to The Lookout .

See https://radiate.fish/   Subscribe to Liebl & Schmid-Pfähler .

  54:26 On the Pusey–Barrett–Rudolph Theorem (2012). Her "happiest thought" is quite sad, really! What she says seems to me to apply equally to the EPR paradox: if you make two separate observations on a spin-singlet state then you are carrying the information about the preparation of the state to the places where the measurements are made. She wrote a prize-winning essay for a competition run by FQXi with the title Fundamental? and there is an on-line discussion with readers which you can read. Subscribe to Theories of Everything .

I was thinking about Ben Eater's 6502 Breadboard Computer . It's quite expensive, because you need an EPROM programmer and a power supply and an LCD display so it all adds up to $200 or so. But I can get old Rockwell 6502 chips on eBay for about $15, and a couple of Raspberry Pi Pico2s and some SN74LVC245A logic level shifters for about the same price, so for $30 I could build "soft hardware" peripherals for a real 6502 CPU. This could interface the 6502 to RAM/ROM/Clock and I/O "software circuitry" through WEB USB and a web page, see Access USB Devices on the Web . Then I would be able to build that modular 6502 computer that I drew circuit diagrams for when I was a kid, ... The advantage with this way of doing things is that I would be able run the CPU at low clock speeds and have a software digital logic analyser watching the pins and setting hardware debug breakpoints and what-not. The trick is to design the thing so that the software is modular and l...

The're some interesting things people have been doing with soft robotics and a catch-up on Ben Eater's Microsoft BASIC on 6502 adventure, amongst much more besides.  Listen to it and get the links to the articles here:  Hackaday Podcast Episode 316: Soft Robots, Linux The Hard Way, Cellphones Into SBCs, And The Circuit Graver . The Circuit Graver is a mainly 3D-printed machine that carves copper-clad fiberglass (or draws with pens) Subscribe to Hackaday. Here's a talk about Jake Read's Open Systems Assembly Protocol : There are some slides here:  https://jakeread.pages.cba.mit.edu/home/present/2022-04_oshwa/#/ . 17:30 It's interesting, but it took three years before I got to hear about it! WEB USB was in Chrome in 2017. See  Access USB Devices on the Web . See also  Francis Stokes - The Software in Pen Plotters and CNC Devices and Daniel Dakhno on Restoring A Pinball Machine . See Working in Public: The Making and Maintenance of Open Source Software by ...

I can't wait to be chased by one that's eight-feet tall and carrying an M16 machine gun, ... Subscribe to MIT .

Agave Wercklei was named after the German-born Carlos Werckle.  There's a potted biography of him published in Science in 1926: Subscribe to Crime Pays But Botany Doesn't . I told him about begging in the streets there:  Weather Report 15th April 2021 : This must've been a few days before I got my phone stolen:  This was a place somewhere up in Escalante :

My comment: People don't do particle physics because it's interesting, they just do it to earn a living. The reason it's not interesting is so many people in the field are only doing it to earn a living. I don't know what anyone can do about that, since everybody thinks it's very important to earn a living. It seems ridiculous to me. Subscribe to Sabine Hossenfelder . 

See  Toby on Martin Gardner's Mathematical Games Column and His Books . Subscribe to Devine Lu Linvega . See How to Fold an Origami Flexagon By Joe_Tutorials Here's the remake: Subscribe to How To Origami .

Now they have to keep tracking more changes, because this standard is barely a year old: NIST Releases First 3 Finalized Post-Quantum Encryption Standards . And it is still based on the same stupid pseudo-science of public-key cryptography: ultimately the security of the scheme is based on an unverifiable absence of knowledge. For people who have tin-hats: you might wonder why they go to all this trouble to compress the key by just 50%, ... and why is it called "Kyber"? See Alfred Menezes' short course: Subscribe to Mental Outlaw and Cryptography 101 .

... 19,000 did so in 2024 and then the gangs started killing bus drivers. Subscribe to DW Español . Subscribe to Cabrera Labs Podcast . 

The two long folds towards the top are the input and the fold pointing down is the output: See Origami Logic Gadgets by Thomas C. Hull AND Inna Zakharevich Subscribe to Devine Lu Linvega .

See  https://gitlab.futo.org/eron/public/-/wikis/FUBS : FUBS is a software development system that made me like programming again. It will continue to be a private work in progress for many more months. It will be made public and be the ultimate open source project when it is ready: It must be self hosted on bare metal with nothing written in another language (no Linux, no LLVM, no gnu, not even legacy text editors). It must be self hosted on its own source code repository. It must be be under a new open source license that ensures our core principal is not violated by other programmers' forks. We have an almost pathological focus on minimalism. We want the functionality of any modern IDE with only 100,000 lines of code running on bare metal. I found that on  https://forums.raspberrypi.com/viewtopic.php?t=339465 . Subscribe to FUTO .

It's really interesting, ... Bose's manuscript was rejected so he just sent it to Einstein. Fortunately Einstein read it and thought it was OK, ... I had some comments : ... then I watched the colophon: 4:00 So can astrophysicists separate out what part of that spectral broadening is due to thermal motion and what part to different isotopes? Or doesn't that really matter for astrophysics? [Update 31:57 so could you make three videos describing spectral broadening?] [Update: 45:16 or four videos?] 24:09 The simplest explanation of the Stern-Gerlach experiment is always one where we pretend we can measure the spin of a free electron. As far as I know there is no spin experiment that can do that. They always measure it indirectly with an atom of silver or something, and make some assumptions about the measurable effects on the trajectory of the whole system of electron shells and the nucleus as it passes through the apparatus. I remember that the argument connecting the to...