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Feasibility study of a mission to Sedna - Nuclear propulsion and solar sailing

https://arxiv.org/abs/2506.17732
37•speckx•1h ago•10 comments

Show HN: Spegel, a Terminal Browser That Uses LLMs to Rewrite Webpages

https://simedw.com/2025/06/23/introducing-spegel/
128•simedw•2h ago•70 comments

I built something that changed my friend group's social fabric

https://blog.danpetrolito.xyz/i-built-something-that-changed-my-friend-gro-social-fabric/
295•dandano•3d ago•131 comments

Scientists identify culprit behind biggest-ever U.S. honey bee die-off

https://www.science.org/content/article/scientists-identify-culprit-behind-biggest-ever-u-s-honeybee-die
67•pseudolus•4h ago•36 comments

Show HN: I built the tool I wished existed for moving Stripe between countries

https://www.stripemove.com/
19•felphos•2h ago•11 comments

Show HN: Jobs by Referral: Find jobs in your LinkedIn network

https://jobsbyreferral.com/
34•nicksergeant•2h ago•7 comments

Ask HN: Freelancer? Seeking freelancer? (July 2025)

4•whoishiring•27m ago•12 comments

Grammarly acquires Superhuman

https://www.reuters.com/business/grammarly-acquires-email-startup-superhuman-ai-platform-push-2025-07-01/
64•thm•1h ago•28 comments

OpenFLOW – Quickly make beautiful infrastructure diagrams local to your machine

https://github.com/stan-smith/OpenFLOW
146•x0z•8h ago•42 comments

Experience converting a mathematical software package to C++20 modules [PDF]

https://arxiv.org/abs/2506.21654
5•vblanco•1h ago•0 comments

Simulations reveal the secret to strengthening carbon fiber

https://www.ornl.gov/news/simulations-reveal-secret-strengthening-carbon-fiber
18•gmays•3d ago•3 comments

I write type-safe generic data structures in C

https://danielchasehooper.com/posts/typechecked-generic-c-data-structures/
370•todsacerdoti•22h ago•145 comments

Embabel Agent Framework for the JVM

https://github.com/embabel/embabel-agent
14•t0mas88•2d ago•1 comments

Genetic code enables zebrafish to mend damaged organs

https://www.caltech.edu/about/news/genetic-code-enables-zebrafish-to-mend-damaged-organs
81•bookofjoe•2d ago•7 comments

The new skill in AI is not prompting, it's context engineering

https://www.philschmid.de/context-engineering
756•robotswantdata•18h ago•419 comments

The hidden JTAG in a Qualcomm/Snapdragon device’s USB port

https://www.linaro.org/blog/hidden-jtag-qualcomm-snapdragon-usb/
212•denysvitali•20h ago•32 comments

RP2350pc Open Source Hardware all in one computer

https://olimex.wordpress.com/2025/07/01/rp2350pc-open-source-hardware-all-in-one-computer-with-rp2350b-8mb-psram-16mb-flash-four-usb-host-dvi-hdmi-output-and-audio-codec-for-retro-computer-emulation-and-education/
32•AlexeyBrin•3h ago•7 comments

Show HN: ToplingDB - A Persistent Key-Value Store for External Storage

https://github.com/topling/toplingdb
31•rockeetterark•5h ago•9 comments

Noloco (YC S21) is hiring a founder's associate in Barcelona

https://www.ycombinator.com/companies/noloco/jobs/K7q02eV-founders-associate
1•darraghmckay•8h ago

When Did Nature Burst into Vivid Color?

https://www.quantamagazine.org/when-did-nature-burst-into-vivid-color-20250627/
5•jandrewrogers•3d ago•0 comments

Aesop in Words of One Syllable

https://blog.pgdp.net/2025/07/01/aesop-in-words-of-one-syllable/
8•sohkamyung•1h ago•6 comments

Show HN: A continuation of IRS Direct File that can be self-hosted

https://github.com/openfiletax/openfile
124•elijahwright_•17h ago•9 comments

First-Class Models: The Missing Productivity Revolution

https://frest.substack.com/p/first-class-models-the-missing-productivity
17•surprisetalk•2d ago•11 comments

Proton joins suit against Apple for practices that harm developers and consumers

https://proton.me/blog/apple-lawsuit
514•moose44•21h ago•526 comments

Abstraction boundaries are optimization boundaries

https://blog.snork.dev/posts/abstraction-boundaries-are-optimization-boundaries.html
37•delifue•3d ago•5 comments

Donkey Kong Country 2 and Open Bus

https://jsgroth.dev/blog/posts/dkc2-open-bus/
247•colejohnson66•1d ago•60 comments

The average chess players of Bletchley Park and AI research in Britain

https://blogs.bl.uk/science/2025/06/the-average-chess-players-of-bletchley-park-and-ai-research-in-britain.html
30•salonium_•4h ago•25 comments

Cloudflare to introduce pay-per-crawl for AI bots

https://blog.cloudflare.com/introducing-pay-per-crawl/
335•scotchmi_st•5h ago•172 comments

Claude Code now supports hooks

https://docs.anthropic.com/en/docs/claude-code/hooks
295•ramoz•15h ago•125 comments

Xfinity using WiFi signals in your house to detect motion

https://www.xfinity.com/support/articles/wifi-motion
603•bearsyankees•20h ago•411 comments
Open in hackernews

Show HN: I Built a Paul Graham AI Advisor for Founders and Hackers

https://paulgraham.resurrect.space
17•vednig•6h ago
Hey, just wanted to share with you guys and app that I built and deployed in a day with Lovable.

So, as a founder I always wanted to have an advisor but my budget would always be less, then on the other hand hand I had Paul's essays on Startup Advice, which I never read because I was busy building stuff.

Hence, I built this product which comes into a sweet spot of both at the same time being more reasonable and capable than the alternative. ps: it's running on a reasoning model and tbh I've been able to gather pretty good insights from it.

Note to PG: If you're seeing this. I'm your big fan. Thanks for doing all the stuff you do.

Comments

Nevermark•4h ago
How is progress on Arc going?

> Paul Graham: I'm sorry, I'm having trouble connecting right now. Please try again.

He’s dodging!

vednig•2h ago
Probably got overwhelmed, from the HN requests
elcapitan•4h ago
Does Paul Graham have trouble connecting as well?
vednig•2h ago
Got that fixed, thanks
bonsai_bar•2h ago
You're a big fan but have never read his essays on Startup Advice?
bonsai_bar•2h ago
Isn't this a little creepy? It's mimicking an identity of someone that you haven't gotten the permission to do. It feels wrong.
ryandvm•2h ago
Worse, this is achieving levels of cringe our best scientists previously thought impossible.
vednig•2h ago
Scientists have been wrong before
vednig•2h ago
Unethical? Maybe, illegal? No App clearly states that it is an AI Advisor not a real person
vednig•2h ago
There's a lot of stuff on the Web, I've read few of them but not all.
pacifika•2h ago
I'm a big fan of vednig and I have created an AI Advisor generator, it's already hugged to death at about:blank
vednig•2h ago
I can understand why your homepage has advisors
vednig•2h ago
btw, previously someone attempted the same at paulgraham.chat but it's not a reasoning model, and doesn't do well with additional details
npalli•35m ago
Sorry folks, asked PG what's the most important thing for startups (hoping to hear "make something people want") but got this goobledygook.

Paul Graham A question that gets to the heart of startup success! Based on my essays and experience, here's the most important thing for startups to focus on, followed by a brief elaboration and some secondary focuses tailored to different startup stages:

Most Important Thing: "Validate and Iterate on a Problem with a Large enough Market" (or more succinctly, "Solve a Big Problem People Will Pay For")

Elaboration: Validate:

Ensure there's a genuine problem or need in the market. Talk to potential customers to understand the pain point deeply. Problem with a Large enough Market:

The problem should be significant enough that solving it attracts a substantial user base or generates considerable revenue. Market Size: Ensure the market is large enough for your growth ambitions. Iterate:

Be prepared to refine your solution based on feedback and market response. Pivots might be necessary; being open to changing direction based on validation is key. Why This is Paramount: Reduces Risk: Focusing on a validated problem minimizes the risk of building something no one wants. Focus: Gives the startup a clear direction, helping allocate scarce resources efficiently. Scalability: A large enough market provides a clear path to growth. Secondary Focuses by Startup Stage: Idea/Seed Stage Secondary Focus: Team Building Assemble a balanced team capable of execution, adaptation, and growth. Early Growth Stage Secondary Focus: Scaling Customer Acquisition Efficiently Develop and refine a cost-effective user acquisition strategy to leverage the validated market opportunity. Later Growth Stage Secondary Focus: Operational Efficiency & Strategic Partnerships Streamline operations to maintain profitability with scale. Pursue strategic partnerships to further expand market reach or defend position. Example from My Essays ( referenced in your initial query's text block, though not directly asked about here): Relation to "Programming Bottom-Up" (Chapter 002): This essay emphasizes building upon and validating assumptions iteratively, similar to the iterative validation process recommended for startups. Connection to "Good Writing" (Chapter 229): While not directly about startups, it highlights the importance of clarity and iteration in communication, mirrored in the need for clear problem understanding and iterative solution refinement in startups. Actionable Advice for Startups Based on This: Action How Validate Problem Conduct at least 20 in-depth customer interviews. Assess Market Size Use publicly available market research reports and calculate your potential share. Iterate Based on Feedback Allocate 20% of development time to pivots or adjustments based on early user feedback. Review and Adjust Quarterly Schedule regular team reviews to assess progress against problem validation and market response.

vednig•8m ago
that's what the essays say, i guess