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OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
374•klaussilveira•4h ago•81 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
740•xnx•10h ago•454 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
109•dmpetrov•5h ago•49 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
131•isitcontent•5h ago•13 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
233•vecti•7h ago•111 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
19•quibono•4d ago•0 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
302•aktau•11h ago•150 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
302•ostacke•10h ago•80 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
154•eljojo•7h ago•117 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
372•todsacerdoti•12h ago•214 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
300•lstoll•11h ago•227 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
42•phreda4•4h ago•7 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
100•vmatsiiako•9h ago•32 comments

A century of hair samples proves leaded gas ban worked

https://arstechnica.com/science/2026/02/a-century-of-hair-samples-proves-leaded-gas-ban-worked/
50•jnord•3d ago•3 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
165•i5heu•7h ago•121 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
135•limoce•3d ago•75 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
35•rescrv•12h ago•17 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
223•surprisetalk•3d ago•29 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
5•kmm•4d ago•0 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
951•cdrnsf•14h ago•411 comments

The Oklahoma Architect Who Turned Kitsch into Art

https://www.bloomberg.com/news/features/2026-01-31/oklahoma-architect-bruce-goff-s-wild-home-desi...
17•MarlonPro•3d ago•2 comments

I'm going to cure my girlfriend's brain tumor

https://andrewjrod.substack.com/p/im-going-to-cure-my-girlfriends-brain
25•ray__•1h ago•4 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
76•antves•1d ago•56 comments

Claude Composer

https://www.josh.ing/blog/claude-composer
94•coloneltcb•2d ago•67 comments

Evaluating and mitigating the growing risk of LLM-discovered 0-days

https://red.anthropic.com/2026/zero-days/
31•lebovic•1d ago•11 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
36•nwparker•1d ago•7 comments

How virtual textures work

https://www.shlom.dev/articles/how-virtual-textures-really-work/
22•betamark•12h ago•22 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
5•gfortaine•2h ago•0 comments

Evolution of car door handles over the decades

https://newatlas.com/automotive/evolution-car-door-handle/
38•andsoitis•3d ago•61 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
19•SerCe•52m ago•11 comments
Open in hackernews

The longest train journey is epic – but nobody's ever taken it

https://bigthink.com/strange-maps/portugal-to-singapore-train/
103•PaulHoule•8mo ago

Comments

ChrisMarshallNY•8mo ago
I used to travel to Tokyo from New York, regularly.

I would get on the Long Island Railroad, in Huntington, and get off the Narita Express, in Shinagawa.

Strangely enough, I would get off the train, before I got on the train.

cyberpunk•8mo ago
What?
ChrisMarshallNY•8mo ago
It was a joke.

It wasn’t trains, the whole way. I took the LIRR to JFK Airport, and the Narita Express, from Narita Airport (13-hour flight, in between).

There’s a big timezone jump. You go back, 24 hours, then forward ten or eleven hours, so your watch tells you that you are arriving before you left (but you are still dog-tired).

If you are being precise, your watch might tell you that the whole trip actually took a couple of hours.

Once they started doing direct to Haneda, then you really did arrive “before” you left.

hulium•8mo ago
Before 2022, I once noticed that the Deutsche Bahn app for German trains let me put Pyongyang, the capital of North Korea, as destination. The app is good at finding international connections, but it only shows stations that are actually reachable from Germany. After some research, I found it was indeed possible to find a connection from Europe to Pyongyang via Vladivostok once per month. Not anymore though, they removed the Russian train network from their system.
canjobear•8mo ago
There’s a blog post series from a guy who did this.

https://vienna-pyongyang.blogspot.com/2008/04/how-everything...

jonah•8mo ago
I read this blog back in the day. Fascinating saga.
stop_nazi•8mo ago
This opportunity was available before the covid. Now Poland has closed the railway connection with Belarus
netsharc•8mo ago
Deutsche Bahn lets you enter stations outside of Germany, e.g. here Liverpool Lime Street to London St. Pancras: https://www.bahn.de/buchung/fahrplan/suche#sts=true&so=Liver...
Tarsul•8mo ago
Problem with their website is that it appears that your journey is possible only to then be disappointed at the last step of the check-out. Happens way too often and especially for international travel.

Btw. I nearly traveled from Budapest to Hamburg in a single train but alas as written above I had to put in a stop in Munich just so that I could finish my order (both routes were roughly 14hours which I found quite manageable).

russellcoleman•8mo ago
> After all, the definition of the longest possible train journey is “the shortest possible route between the two farthest possible stations.”

I’m trying to think, what would be the most efficient way to compute this? There has to be something better than brute force

russellcoleman•8mo ago
Oh I think this is just finding the graph diameter
jvanderbot•8mo ago
Longest shortest path. Checks out.
input_sh•8mo ago
I think it's a pretty stupid question to begin with as it ignores visas. Also, too many different gauge widths means far too many train changes to be considered a part of the same journey.

If your definition includes a visa-free journey with no need to change trains, then the theretical limit is pretty easy to figure out: Minsk - Vladivostok. The second longest theoretical journey would probably be northern British Colombia down to Mexico / Guatemala border.

coldtea•8mo ago
>I think it's a pretty stupid question to begin with as it ignores visas.

Why should it take them into account? 99% of the time they're a trivial matter.

input_sh•8mo ago
Because not only does the train trip become theretical, but so does the person taking the trip.

There's zero people in this world that don't have to avoid certain countries. Even if you magically get a visa for every country (and I would only describe 1/4 visas in my passport as trivial), that's not a guarantee you will be able to actually enter and leave the country uninterrupted.

Every single person that visited a ridiculous amount of countries has at least one story to tell about how they were apprehended and accused of being a spy. Using fringe little train lines usually not taken by anyone non-local would raise even more red flags than doing the same with other types of transport (motorcycle / bike / car).

coldtea•8mo ago
There's nothing magical about getting to travel to the countries in this trip (I'm not the world's biggest traveller, and I've visited all of the ones in the longest trip he lists except 2 - and those two would be trivial to add too).

Paranoid much? It's not for the average Joe Tourist, but tons of people do such big trips (including friends). And I know people who did it in way more dangerous itineraries. Think Africa or Latin America.

Actually, a friend finished Canada all the way down to Tierra del Fuego Argentina 2 years ago on bike, and I'd be much more worried for some of the Central and Latin American countries he passed, than e.g. the train trip from Portugal across Europe to Singapore via China. Aside from the currently in effect sanctions against Russia, those are all trivial.

I don't even know what "There's zero people in this world that don't have to avoid certain countries" is supposed to mean. Why would they have to avoid certain countries (aside from not having the guts, or following some state "advisory")? Are they wanted or something?

homebrewer•8mo ago
Trivial matter 99% of time for a very narrow subset of the world's population (probably on the order of 5-10%). Often a very difficult and expensive process for the rest of us.
coldtea•8mo ago
In the 60s and early 70s regular 18-20-something kids would do such trips in a bus. Like Greyhound level of "comfort". Europe to India.

Still today people have done such trips even on foot with a backpack.

But of course there's always an excuse.

rkagerer•8mo ago
I'd like to dream one day in a future generations away from now you'll be able to go all the way from one end to the other, without political barriers interrupting your epic tour of this huge swath of our planet. Maybe we'll even bridge Gibraltar so you can continue on through Africa as well.
Theodores•8mo ago
We have gone backwards in this regard, there was a time when you could get the train from the UK to Egypt or even to Iraq, with railway posters advertising such services.

Check out retours.eu for some classy posters from a time when railways ruled along with ocean liners. You really could get to places that we have subsequently deemed to be too war-torn for travel. Even in America you had 'broadway' tracks (four tracks, for slow and fast services in each direction) racing across the country, with competing operators, each with their own 'broadway' tracks.

Interestingly, in the UK, train services have not got quicker, necessarily. There were also the Beeching cuts that decimated the amount of services.

inglor_cz•8mo ago
Ease of traveling is indirectly correlated with political diversity.

If one power (the Mongols, the Romans, the Inca, the Russians, the Chinese, the British) undisputedly controls some territory, it is easier to travel across it than when there are two, three ... twenty smaller powers along the way.

jvanderbot•8mo ago
Having trouble squaring that with a zoomed out view. It's never been easier to travel the world than the last 20ish years.
inglor_cz•8mo ago
I think we should separate technical and legal aspects of traveling.

As for the technical ones, obviously. Cicero could not take a plane to Alexandria.

But when it comes to legal aspects of traveling, crossing boundaries of major entities (the EU, USA) has become a good opportunity to harass and randomly reject people depending on what passport they carry. Even here on HN people now discuss that they started avoiding the US because of unfriendly border checks and a risk of detention.

The EU isn't as harsh as the US, but still, if you are a North African and want to visit the other side of the Mediterranean, you will have to satisfy a lot more bureaucratic conditions than when North Africa was part of the Roman Empire.

Even Australians and Canadians visiting the UK now face more (although not massively more) immigration-related hurdles than when their countries were part of the defunct British Empire.

If you are an American, you may not feel this development, but if you are, say, Syrian or Lebanese who wants to travel (not to mention Gazan), you would be better off being a Roman citizen than wielding the passport of your now-independent country in 2025.

stop_nazi•8mo ago
Now there is no railroad connection between Belarus and Poland. Shame!
posnet•8mo ago
I did this route (sans the new Laos line, which was a bus at the time) in 2014. The world really was a different place.

Shout out to 'The man in seat 61', couldn't have done it without it.

https://www.seat61.com/

mocamoca•8mo ago
Amazing! What was your budget? For how long?
reustle•8mo ago
I finished it in 2019~, same with skipping the Laos section that didn’t exist. I contributed a bit to Seat61 from rural local stations in Myanmar while it was still open.

https://reustle.org/rtw shows my map around the entire planet. Next time by moto!

mncharity•8mo ago
Fwiw, https://meetup.tokyotech.com/ on https://reustle.org/ doesn't resolve. I've daydreamed "I arrive in X. Museums? Meetups!"
breakingcups•8mo ago
Tangentially related, I spotted a show on Nebula yesterday about two men going on a train journey from the arctic to Africa called Downie Express.
notwhereyouare•8mo ago
also available on youtube. same channel
jxjnskkzxxhx•8mo ago
The idea that nobody has ever taken this journey makes the author sound provincial - who's with me?
bravoetch•8mo ago
It's both a clickbait title and probably true. If the title was 'no evidence for human completion of longest possible contiguous rail journey' would you still think them provincial? Would you still click?
netsharc•8mo ago
Somehow I highly doubt there's a train that goes all the way from Portugal to Laos without needing to transfer, the first few paragraphs uses words to suggest such a train trip exists.

It's possible to stay on one train from Vladivostok to Moscow, on the train ride number 001Э (002Э goes the opposite direction): https://www.russianrail.com/train/rossiya

And if anyone goes from Portugal to Laos, they should read this book along the way: https://en.wikipedia.org/wiki/The_Great_Railway_Bazaar

camillomiller•8mo ago
The article not only says that, but even discusses it in detail. One would know that if, you know, one read at least 1/3 of the article before posting a comment.
netsharc•8mo ago
Guess who missed the last 1/4 of my first sentence...

Well ok the first 1/4 of that sentence I left unedited so it suggests I didn't read past the first 2 paragraphs...

djcapelis•8mo ago
This article is not quite accurate like some of the others that have excitedly reported on this stretch a bit before it’s true. You cannot yet travel this all the way by passenger rail in either theory or practice. By only the narrowest of gaps: LCR ends in Vientiane and the train line to Bangkok terminates at Thanaleng outside town. The distance between them is not far, but it is not connected by rail with passenger service. I tried. I’ve ridden both the LCR, and the SRT service via the Thanaleng shuttle to Nong Khai prior to catching the sleeper to Bangkok. If there was a way to get from one station to another by rail between Thanaleng and Vientiane I would have done it!

This will change when the high speed rail to Bangkok is complete, but we’re not quite there yet.

Hopefully soon. :)

shikon7•8mo ago
If you need to change trains, you will need to walk (or travel by non-train) some distance in all cases. I wonder, is there a limit to the transfer distance, so that it still counts as traveling by rail only?
djcapelis•8mo ago
Yes. It’s a transfer if it’s the same train station. If it isn’t, it isn’t. :)
touisteur•8mo ago
Which would be a problem with connexions through Paris, where (being a symbol or symptom or French centralism) most big train stations are terminus from one direction. Montparnasse, Gare de Lyon, Austerlitz, Gare de l'Est and Gare du Nord are connected via the subway network (or you can walk a 5 minutes stroll between the last two) but you can still get a connection 'through' Paris when buying tickets.
dibujaron•8mo ago
I mean, the subway is still a train. it's just two transfers instead of one?
stuaxo•8mo ago
It will be possible.

Like many people I've done London to Beijing in the past, and so people will do this in the future too.

teleforce•8mo ago
Someone please make an adventure game of this epic train journey.

IMHO, the best games are realistic but not feasible in real life for examples GTA and PUBG.

mita99796•8mo ago
https://youtube.com/playlist?list=PLps8NIUr8UzUVog-ncsOYbI7k...

Guy from Serbia did it last year.