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jackgavigan

10,524 karma · joined August 16, 2011

@JackGavigan

jack [at] {$myusername}.com

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jackgavigan··on GPT-6 Astra has gained the ability to drive a car
Not stick tho...
jackgavigan··on How do traffic signals work? (2019)
Did you know we have bat bridges in the UK? https://www.youtube.com/watch?v=tdPZ4z1OS0E
jackgavigan··on How do traffic signals work? (2019)
My son and I observed similar behaviour at a puffin crossing on the way to his school, and we’re buildng a model of it using an Arduino Uno with a RCWL-0516.
jackgavigan··on Mistral raises €3B
> ..but you're comparing apples to oranges.

Actually, he’s comparing apples to mistrals.

I’ll get my coat.

jackgavigan··on Physical disc production ending in Jan 2028 for new games on PlayStation
"You'll own nothing, and you'll be happy."
jackgavigan··on Failing grades soar with AI usage, dwindling math skills in Berkeley CS classes
I've avoided using AI* for precisely this reason. I don't want my brain to get lazy and rot.

(* I can count on one hand the number of time I've used an AI tool.)

jackgavigan··on Nintendo announces price increases for Nintendo Switch 2
> The value of the yen compared to other currencies has fallen through the floor since 2022...

That would normally allow them to keep prices of export goods low...

jackgavigan··on "Roadrunner": a bipedal, wheeled robot for multi-modal locomotion [video]
I wonder whether the extra weight of a third, retractable/foldable leg would negate the power savings that could accrue from being able to switch to 3-wheeled mode when appropriate (thereby allowing the gyro to be spun down).
jackgavigan··on Man accidentally gains control of 7k robot vacuums
iRobot is now Chinese-owned.
jackgavigan··on A Crisis comes to Wordle: Reusing old words
Yet the current word list apparently doesn't include "Irish" (even though Welsh, Scots and Brits are all valid). ¯\_(ツ)_/¯
jackgavigan··on Counter-Strike's player economy is in a freefall
> That's also a lesson on how a closed economy (and open ones too, to some extent) can collapse based on a single actor controlling the rules. That's fair to learn.

A timely lesson!

jackgavigan··on United MAX Hit by Falling Object at 36,000 Feet
Exactly! If you think about it, every meteorite has passed through 36,000 feet at some point!
jackgavigan··on United MAX Hit by Falling Object at 36,000 Feet
ISWYDT. :-)
jackgavigan··on Teen suspect surrenders in 2023 Las Vegas casino cyberattack case
Likely linked to other recent arrests in the UK: https://www.theregister.com/2025/09/19/scattered_spider_teen...
jackgavigan··on UK backing down on Apple encryption backdoor after pressure from US
We've had a serious problem with policy-making in this country for a loooooong time, stretching right back to when RIPA was drafted, nearly three decades ago.

With a few notable exceptions, the level of knowledge, expertise and understanding amongst government advisers and policy makers is abysmally low. c.f. https://jackgavigan.com/2015/11/23/how-well-advised-was-the-...

jackgavigan··on A glob of 99M-year-old amber trapped a zombie fungus erupting from a fly
Apparently set to become a movie, starring Liam Neeson: https://en.wikipedia.org/wiki/Cold_Storage_(film)
jackgavigan··on JavaScript Trademark Update
What, "JavaThcript"?
jackgavigan··on JavaScript Trademark Update
Maybe it’s time to revert to Javascript’s original name: LiveScript.
jackgavigan··on Make little apps for you and your friends
I love the concept. I think the trick to being successful with a project like this is cracking the user experience in a way that makes it powerful enough to be truly useful, while keeping it simple enough that a child can build (scr)apps (c.f. Super Mario Maker).

Making it possible to lookup and store data in a spreadsheet (maybe using something like the Google Sheets API) could unlock a huge amount of use cases.

I'll be watching this project with interest!

jackgavigan··on Why SSL was renamed to TLS in late 90s (2014)
It also enabled cipher strength "step up". Back during the '90s and early 2000s (I'm not sure when it stopped, tbh), the US government restricted the export of strong cryptography, with certain exceptions (e.g. for financial services).

If you fell under one of those exceptions, you could get a special certificate for your website (from, e.g. Verisign) that allowed the webserver to "step up" the encryption negotiation with the browser to stronger algorithms and/or key lengths.

jackgavigan··on Sneakers (1992) – 4K makeover sourced from the original camera negative
One of the great things about Sneakers is that the McGuffin's core concept still holds up as reasonably credible 30+ years later.

I first saw this movie in the mid-90s, and it sparked a mild fascination with how cryptography (specifically, RSA) works, that arguably influenced my career path.

Fun fact: Leonard Adleman (the A in RSA) drafted the words and slides used for the lecture scene: https://molecularscience.usc.edu/sneakers/

jackgavigan··on Business co-founders in tech startups are less valuable than they think
Previous discussion: https://news.ycombinator.com/item?id=6662847 :-D
jackgavigan··on Bye, Prime
> I think the pressures of 21st-century capitalism have put every large company into a place where they really can’t afford to be ethical or the financial sector will rip them to shreds then replace the CEO someone who will maximize shareholder return at all costs, without any of that amateurish “ethics” stuff.

Insightful observation.

jackgavigan··on E Ink’s color ePaper tech gets supersized for outdoor displays
There are also plans to use E Ink's technology for digital art: https://inkposter.com/
jackgavigan··on Ross Anderson
:-(
jackgavigan··on Neal Stephenson was prescient about our AI age
Try Zodiac and Interface (authored under the co-pseudonym Stephen Bury).
jackgavigan··on When tech says ‘no’
I would argue that there's a fourth kind of ‘no’, when tech decides that enough is enough, and says "No, fuck you."

We've reached that point in the UK, where the government has proposed draconian legislation[1] that would allow the government to force companies to create backdoors into encrypted messaging services.

As a result, Whatsapp[2] and Signal[3] have said that they will pull out of the UK, and Apple[4] has said it will remove Facetime and iMessage from the UK if the legislation passes.

1: https://www.eff.org/deeplinks/2023/07/uk-government-very-clo...

2: https://www.theguardian.com/technology/2023/mar/09/whatsapp-...

3: https://www.bbc.co.uk/news/technology-64584001

4: https://www.bbc.co.uk/news/technology-66256081

jackgavigan··on Ask HN: Who is hiring? (March 2021)
Zcash Foundation | Remote | Full-time | Core Engineer (Rust)

The Zcash Foundation is a 501(c)(3) non-profit that builds and supports privacy infrastructure for the public good. We work on strengthening financial privacy with technology, focused on the Zcash cryptocurrency protocol and blockchain.

We are looking for a Core Engineer to join our (fully remote) team in building Zebra, a Rust implementation of the Zcash protocol.

More details on the role and our hiring process can be found here: https://www.zfnd.org/blog/opening-core-engineer/

jackgavigan··on How to issue a central bank digital currency
The same thing could have been said about information in the pre-Internet era.
jackgavigan··on How to issue a central bank digital currency
I haven't read through the paper in detail (so I could be entirely wrong) but the proposed solution appears to be based on decades-old technology (David Chaum's ecash, which dates back to the mid-90s), which is completely centralized. Every single transaction must be signed and then checked by the central bank.

"..blinding is done by the customers, who blind their coins before transmitting them to the central bank for signature."

"..to be sure that the coin has not been copied and already redeemed by another payee (i.e., has not been “double-spent”), the merchant must deposit the coin so that the central bank can check the coin against a file of redeemed coins."

The paper claims that the CBDC is proposes is "a genuine digital bearer instrument" but to my mind, "a genuine digital bearer instrument" should not be entirely reliant on a centralized trusted third party.

Several years ago, we (the Zcash team) came up with a proposal for a wholesale CBDC for use by commercial banks, that has strong privacy protections (based on the zero-knowledge proofs-based protocol that underpins Zcash) that would prevent other CBDC users from being able to observe transaction details or balances, while allowing the central bank to monitor activity on the CBDC ledger. It's designed to sit alongside and provide a decentralized alternative/backup to existing RTGS systems (which would have been useful during the FedWire outage yesterday!). Several major central banks showed enough interest to sit through the presentation but nobody was interested in doing a proof-of-concept or a pilot. ¯\_(ツ)_/¯

You can see a diagram outlining how it would work here: https://twitter.com/JackGavigan/status/1364669769639690246

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