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

https://openciv3.org/
576•klaussilveira•10h ago•167 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
888•xnx•16h ago•540 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
90•matheusalmeida•1d ago•20 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
18•helloplanets•4d ago•9 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
20•videotopia•3d ago•0 comments

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

https://github.com/valdanylchuk/breezydemo
197•isitcontent•11h ago•24 comments

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

https://github.com/pydantic/monty
199•dmpetrov•11h ago•90 comments

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

https://vecti.com
307•vecti•13h ago•136 comments

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

https://github.com/microsoft/litebox
352•aktau•17h ago•175 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
350•ostacke•17h ago•91 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
452•todsacerdoti•18h ago•228 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
20•romes•4d ago•2 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
78•quibono•4d ago•17 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
52•kmm•4d ago•3 comments

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

https://eljojo.github.io/rememory/
253•eljojo•13h ago•152 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
388•lstoll•17h ago•263 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
5•bikenaga•3d ago•1 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
230•i5heu•13h ago•174 comments

Zlob.h 100% POSIX and glibc compatible globbing lib that is faste and better

https://github.com/dmtrKovalenko/zlob
12•neogoose•3h ago•7 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
24•gmays•6h ago•5 comments

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

https://github.com/phreda4/r3
68•phreda4•10h ago•12 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
116•SerCe•7h ago•94 comments

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

https://infisical.com/blog/devops-to-solutions-engineering
135•vmatsiiako•16h ago•59 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
268•surprisetalk•3d ago•36 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
42•gfortaine•8h ago•13 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
168•limoce•3d ago•87 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/
1039•cdrnsf•20h ago•431 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
60•rescrv•18h ago•22 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
14•denuoweb•1d ago•2 comments

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

https://docs.smooth.sh/cli/overview
88•antves•1d ago•63 comments
Open in hackernews

New quantum paradox clarifies where our views of reality go wrong (2018)

https://www.quantamagazine.org/frauchiger-renner-paradox-clarifies-where-our-views-of-reality-go-wrong-20181203/
29•tejohnso•7mo ago

Comments

comrade1234•7mo ago
> The experiment, designed by Daniela Frauchiger and Renato Renner (opens a new tab), of the Swiss Federal Institute of Technology Zurich...

I remember when this came up in the news six years ago. I looked them up (I live in Zurich) and, if I remember correctly, the grad student quit physics after this paper and went into programming...

NetRunnerSu•7mo ago
S-D-R, Software-Defined Reality!
dandanua•7mo ago
This is from 2018 and there is nothing extraordinary in that thought experiment, see a simpler explanation here https://physics.stackexchange.com/a/707332.
randomNumber7•7mo ago
Most physicists I have talked to would fit better into a church than the ivory tower of science.
jfengel•7mo ago
I don't doubt you, but I think you're meeting the wrong physicists.

I'll admit, I'm not entirely sure what you mean by that. I suspect I also have a different idea of what church-people are like. Perhaps you could elaborate?

randomNumber7•7mo ago
The genius of what newton did (and what started the modern world I would argue) was to stop asking the question of "why" and just describe (with mathematics) the "what".

It was always just a model of the world. We (humans) have defined it and it describes what we see (the experiments).

Asking the question of the "truth" in a way similiar to platon and kant is religous. What is truth? We as humans can only gain knowledge from our experiences.

dwd•7mo ago
Someone like Douglas Hoffman and his Interface Theory of Perception is one that comes to mind.

Anyone who advocates a panpsychist view of reality seem to be trying to create a mathematical/physics proof for the existence of a God like entity.

vanderZwan•7mo ago
This is from 2018, btw.

Anyway, to repeat the same joke I made when this came out seven years ago: speaking as a physics drop-out who then pursued a four-year bachelor of arts, multiple conflicting interpretations of the same thing being considered valid even if they lead to opposite things being considered true are my bread and butter. So, sorry quantum mechanics, I guess you're part of the humanities now.

Bonus quasi-relevant SMBC https://www.smbc-comics.com/comic/humanity

anotherpaulg•7mo ago
Scott Aaronson has an interesting take on the 2018 paper being discussed in the article:

https://scottaaronson.blog/?p=3975

Strilanc•7mo ago
Yeah this post nails the issue.

In order to do the X-basis measurement described in the paper, it's necessary to do very funky things to the simulated agents inside the computers. Probably the easiest way to implement the measurement would be to literally rewind the simulation back to before the measurement started, when the superposition was limited to a single qubit, do the measurement at that time, and then run the simulation back forwards to the current time. The paper doesn't specify an implementation, so it should work for any implementation, so this should be a valid way of doing the operation. But this implementation implies you're undoing all the reasoning the agents did, changing the initial state, and so as you run them forwards again they are redoing the same reasoning steps but in a new context where the premises no longer apply. Which of course results in them making mistakes. The same thing would happen classically, if you rewound a simulated agent to change some crucial fact and then assumed reasoning from premises that no longer held should still be valid.

I think Scott also co-authored a follow up paper, where they made some steps towards proving that the only computationally efficient way to implement the X-basis measurement was to do this simulation rewinding thing. But unfortunately I can't seem to find it now.

Aardwolf•7mo ago
So the assumptions are:

1. An agent can analyze another system, even a complex one including other agents, using quantum mechanics

2. This assumption of consistency, that the predictions made by different agents using quantum theory are not contradictory

3. If an agent’s measurement says that the coin toss came up heads, then the opposite fact — that the coin toss came up tails — cannot be simultaneously true.

But isn't everything you measure in quantum mechanics probabilistic? E.g. the article itself gives the example of measuring a polarized photon at 45 degrees giving 50/50 chance of each outcome

So all 3 assumptions have an issue:

1: even if you can analyze it, you're analyzing just probabilistic data anyway.

2: why expect consistency if your results are probabilistic?

3: I thought the whole concept of superposition was both options being simultaneously true

What am I missing here that makes this paradoxical?

lumost•7mo ago
As I recall, the majority of these paradoxes are resolved by the observation that you can't get a free measurement, for one system to measure another - both must interact. So either

1. You Perform some form of strong measurement which is certain to perturb both systems - leading to the collapse of entanglement etc. and various constraints collapsing.

2. You perform a weak measurement which leaves the opposing systems in probabilistic states which must still be consistent.

3. You perform no measurement and each system maintains an internally consistent statistical distribution over possible states.

The paradoxes show up when you assume there is a free measurement which does not perturb either system - or only perturbs one system.