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tow21

488 karma · joined January 30, 2009

Founder/CEO, ArcticRex

Email: toby@arcticrex.com Twitter: @tow21

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tow21··on Security through obscurity is dead, and AI delivered the fatal blow
Totally disagree tbh. Obscurity is about the only form of security worth the name these days.

Don't run on open source software - doesn't matter how obscure it is, the LLMs will know about it.

Don't run on software that other people use - if there is more than one copy of the software accessible, it'll be broken elsewhere and you'll be a victim of drive-by hacking.

Do - run your own software, written by you, which nobody else uses, that is closed source and completely undocumented. Then you might have some chance of avoiding being hacked.

tow21··on I still prefer MCP over skills
(everything I write about MCP means "remote MCP" by the way. Local MCP is completely pointless)

MCP provides you a clear abstracted structure around which you can impose arbitrary policy. "identity X is allowed access to MCP tool Y with reference to resource pool Z". It doesn't matter if the upstream MCP service provides that granularity or not, it's architecturally straightforward to do that mapping and control all your MCP transactions with policies you can reason about meaningfully.

CLI provides ... none of that. Yes, of course you can start building control frameworks around that and build whatever bespoke structures you want. But by the time you have done that you have re-invented exactly the same data and control structures that MCP gives you.

"Identity X can access tool Y with reference to resource pool Z". That literally is what MCP is structured to do - it's an API abstraction layer.

tow21··on I still prefer MCP over skills
This argument always sounds like two crowds shouting past each other.

Are you a solo developer, are you fully in control of your environment, are you focused on productivity and extremely tight feedback loops, do you have a high tolerance for risk: you should probably use CLIs. MCPs will just irritate you.

Are you trying to work together with multiple people at organizational scale and alignment is a problem; are you working in a range of environments which need controls and management, do you have a more defensive risk tolerance ... then by the time you wrap CLIs into a form that are suitable you will have reinvented a version of the MCP protocol. You might as well just use MCP in the first place.

Aside - yes, MCP in its current iteration is fairly greedy in its context usage, but that's very obviously going to be fixed with various progressive-disclosure approaches as the spec develops.

tow21··on Ask HN: What Are You Working On? (March 2026)
For language geeks: https://kpt.datamediate.com

KPT is a language app specifically targeted at explainable verb conjugation for highly inflected/agglutinative languages. Currently works for Finnish, Ukrainian, Welsh, Turkish and Tamil.

These are really hard languages to learn for most speakers of European languages, particularly English - we're not used to complex verb conjugations, they're hard to memorise and the rules often feel quite arbitrary. Every other conjugation practice app just tells you right/wrong with no explanation, which doesn't really help you learn when there are literally hundreds of rules to get right.

The interesting part was using an LLM to create a complete machine-executable set of conjugation rules, which are optimized for human explainability, and an engine to diagnose which rule is at fault when you get it wrong. There's several hundred rules needed for each language in order to cover all exceptions.

NB as a bonus it also works fully offline because my best practice hours are when I'm travelling and have poor connectivity.

tow21··on Ask HN: Those making $500/month on side projects in 2025 – Show and tell
Really cool stuff, I thought about launching something similar earlier this year, there's definitely a market there. I see a lot of AI-ative startups coming up against compliance requirements way earlier than before, with much smaller teams, and most existing solutions just need too much from you as you engage.

How do you see yourself against someone like delve.co?

tow21··on UniFi 5G
Yeah, I know - but an antenna embedded within a small box is going to be much less effective than a big old directional Yagi antenna like https://www.satshop.fi/en/4g/4g-5g/4g-antennas.html

Seems weird to cripple the product by not allowing me to (optionally) disable the internal antenna and instead use and tune an external antenna. And I suspect that is likely to make a difference when you are on the edge of coverage, but you know exactly where the relevant cell tower is, a few km away.

tow21··on UniFi 5G
How does the Teltonika work out for you - I nearly bought it earlier this year but it doesn't have support for external antennae. I'm just on the edge of 5G coverage and I'm not sure I want to splash out on something which I can't tune for decent reception.

Seems an odd omission for a ruggedised outside modem - the Unifi also seems to not support external antennae.

(I'd also prefer a unifi version just so it fits in the with rest of the networking infra I have in the mökki.)

tow21··on Google boss says AI investment boom has 'elements of irrationality'
Google, Meta, Microsoft and Amazon might get through easily as companies. I don't think all G/M/M/A staff will get through easily.
tow21··on Dead Framework Theory
On the plus side, maybe this means the endless churn of JS libraries will finally slow down and as someone who isn’t a JS developer but occasionally needs to dip their toe into the ecosystem, I can actually get stuff done without having to worry about 6-month old tutorials being wrong and getting caught in endless upgrade hell.
tow21··on You can't cURL a Border
Only if you're only talking about income from work. If you own property in country A which you rent out while you live & work in country B, then you probably still owe tax on that rental income in country A. (but it will depend on the exact wording of the relevant DTA if one exists)

And since you are now filling in two tax returns for different countries, with different tax allowances across rental income and work income which interact in decidedly non-linear fashion, you probably need to make sure both country A and B have no confusion about where your work income was earned.

Having spent the last 8 years obsessively counting days across the UK and Finland (and every other country I have visited) exactly to account for this scenario, I am very sympathetic to attempts to solve this problem space!

tow21··on Trump temporarily drops tariffs to 10% for most countries
Much harder to enforce against services.

Physical goods you can hold until tariffs are paid.

Services are paid for by invoices between two corporate entities whose legal domicile may have nothing to do with the real country of origin of the services.

Lots of European SaaS providers invoice US customers from their US subsidiary - impossible to distinguish the transaction in order to put a tariff on it.

tow21··on A deliberate practice app for guitar players who want to level up
Brilliant! Literally my first thought when I saw the original submission was “I wish there was a banjo version”!

Definitely will be using your app.

tow21··on Most people don't care about quality
Otherwise pointless pedantry, but in line with the "nobody cares about quality" ...

"the hoi polloi" grates every time I read it. "hoi polloi" literally means "the many", so this is an awkward pleonasm, "the the many", amounting to a lack of quality in a piece of writing.

tow21··on Code that helped end Apartheid
Coincidentally I was reading this story yesterday:

https://www.londonrecruits.org.uk/index.php/items-received-s...

about the “London Recruits” in the 70s and 80s who smuggled books, leaflets, etc into apartheid SA on behalf of the ANC, doing so in such secrecy they didn’t know each others identity until 29 years after the apartheid regime fell.

Joy Leman, one of the recruits, was my late father-in-law’s colleague.

tow21··on The maddening mess of airport codes [video]
Actually, London used to have one area code, "01".

Then at some point it was split into inner & outer, and there was endless one-up-manship about whether you had an inner or outer London code. (obviously, inner London was posher)

tow21··on Ask HN: Which startups have the most interesting pivot stories?
They still do make rubber products!

https://www.nokianfootwear.com/ https://www.nokiantyres.com/

tow21··on New cars make me want to Saab (2020)
Chiming in here from Finland as another 9-5 owner, 2001 model. Also a station wagon (or "farmari" as the Finns like to call it).

Definitely a much-loved model, I get appreciative comments regularly from middle-aged men whose formative years were clearly spent in Saabs. When I went to the Mercedes car dealership last weekend (thinking about upgrading to an electric vehicle), the salesman was in such raptures over my Saab he nearly forgot to try and sell me a new car.

tow21··on Microsoft 365 has employee surveillance and analytics built in
I think this is honestly a worry over nothing: this is very directly a sales tool to encourage spending on MS products.

What you are seeing is basically meaningless stats dressed up in pretty charts. There are enough pretty charts there to ensure that your organization is doing "better than a peer benchmark" on at least a few metrics.

Then the CIO is able to select the best-looking charts into his board presentation and say, "look guys, we are a really great IT organization that is using tools effectively, please give me more budget to go and spend"

And then some of that budget will get back to Microsoft.

I don't think any of the participants in this dance really believe these numbers actually mean anything, and if you suggested tracking individuals at this level I think you would get push back from the managers because it would be a waste of their time.

tow21··on Ask HN: Who is hiring? (October 2020)
F-Secure | Front-end, back-end, data science, cybersecurity | Helsinki / Oulu (FI), Poznań PL, London UK, Kuala Lumpur MY, Johannesburg ZA | ON-SITE/work-from-home-locally

F-Secure makes products to protect your digital footprint and make the connected world a safer place. This is all suddenly massively more important now everyone is working from home. We're seeing the effects of that over the last 6 months with unexpected growth rates, and we are growing substantially.

We've got around 500 technologists across 5 main sites in Europe, Africa and Asia, and positions are opening up rapidly.

One absolutely key role: for the first time we're hiring an in-house software recruiter to help us grow by bringing people in the door and smoothing out the recruitment path - see https://emp.jobylon.com/jobs/66045-f-secure-software-enginee...

Whoever gets that job will be helping us to fill these open positions and lots more to come...

https://www.f-secure.com/en/about-us/careers/job-openings?c=...

Please apply via the links above.

tow21··on Show HN: Reclaim – an adaptive calendar app that plans time for your routines
I love it. At least, the idea, without having tried it yet. The moment you support Office365 calendars, you can have all my money.
tow21··on Linux was first released to the world from here 17.9.1991
So I actually live (and am typing this) about 5 minutes walk from the CSC head office in Keilaranta, which I can see out of my window. I wonder if the machine is physically located there.

(I'm pretty sure my first linux kernel download was 1997, one of the 2.0-pre series, and it probably came from funet.fi)

tow21··on Turn-by-turntables: How drivers got from point A to point B in the early 1900s
Something like this:

https://www.wanhala.net/post/156592370293/all-roads-lead-to-...

?

tow21··on Downsides to working at a tech giant
... but Palantir? That rather deflated the vision of regret.

Honestly, maybe I’m way out of the normal HN demographic, but my first reaction was, this sounds like, “how I had a lucky escape and didn’t spend most of my early career actively making the world a much worse place.”

I’m no great fan of MS, but given the choice between a job there; or the possibility to work on bringing about a dystopic surveillance future, I just don’t see the hard decision.

tow21··on Counting in the wrong language
My favourite illogical system is archaic Finnish, where it goes (roughly translated)

One, two, three, ... Second-one (11), second-two (12), second-three (13), ... Third-one (21), third-two (22), third-three (23), ...

ie you have an off-by-one error in the tens digit as you are counting.

Modern Finnish retains this for 11-19, but mercifully sanity returns for numbers above that.

tow21··on Helsinki Central Library chosen as the best new public library
Weird. I think it’s rubbish as a public library.

I mean, it’s an interesting building, and a nice place for a cup of coffee, but it’s absolutely useless if you want to go and browse some shelves and borrow some books; it’s like it’s been actively designed to make that hard to do.

tow21··on Why Patterns Failed and Why You Should Care
I think ncmncm means “people”. The cutting edge of computational systems organization is finding ways to effectively work with the complex multiagent systems running on wetware.
tow21··on Ask HN: Who is hiring? (February 2018)
Wärtsilä | Software Engineers of all kinds, Data Engineers, and Data Scientists | Helsinki (FI), Hamburg (DE) | ONSITE, PERMANENT OR CONTRACT | https://www.wartsila.com

Wärtsilä provides equipment to one in three of the world's vessels, from navigation control systems to engines the size of a bus. But we're not just an industrial equipment company: we're building the hardware, software, and data science that underpins the marine industry of the future. The projects we build have very real outputs, and high visibility; see for example http://www.bbc.com/future/story/20170918-the-ships-that-coul....

We're looking for software and data experts to come and help us build this future, and help lead the way. We are working in a traditional industry that is ready to change; we can put your expertise to use immediately and see real, rapid results.

We are hiring across the board; software engineers, (particularly Java and Python), data engineers, data scientists, front end devs, UX and UI specialists, product owners and team leaders.

If you've got experience in the industrial software world, it's definitely a bonus, but we're not too proud to listen to expertise built up in other industries.

If you're interested, send your CV to toby.white@wartsila.com with [WHOISHIRING] in the subject line.

tow21··on Ask HN: Who is hiring? (October 2017)
Wärtsilä (www.wartsila.com) - Software and Data Leadership - Full time - Remote

Help us build an IoT-enabled smart technology company within a 180-year-old engineering organization.

You may not have heard of Wärtsilä, but we support around 1 in 3 of the world's major shipping vessels, providing power, propulsion, navigation or control systems, and we build and operate smart power stations in over 170 countries. Our vision is to enable sustainable societies with smart technologies, and we are investing heavily to bring that about, turning this company of 18000 people into a smart technology organization.

We're building out a dedicated software and data organization, and we're hiring leadership positions to help drive our growth. We're specifically hiring for:

* Director, Software Engineering

* GM, Data Asset Management

Our HQ is in Helsinki, Finland, but we're a global, distributed organization: you can do these jobs from anywhere. Get in contact with careers@wartsila.com to apply for these or any other roles in our Digital Engineering organization.

Or contact me at toby.white@wartsila.com if you want to discuss further.

tow21··on Ask HN: How to ask companies about problems they are facing?
On the other hand, if you're not in a position to go and talk to decision makers about your product, it's worth asking whether you're the right person to be building that product.
tow21··on EU Referendum Results
Probably worth noting that the Daily Express is decidedly opinionated on the question of EU membership; not exactly an unbiased opinion.

Not that I'm disputing the quote (I have no idea) - but Monnet was not the only person driving the formation of the ECSC, and I'm not sure any of the others involved had the same views.

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