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Hacker News. Daily summary. Top 20 stories.

2026-07-23

Terence Tao's ChatGPT conversation about the Jacobian Conjecture counterexample (ChatGPT)

Mathematician Terence Tao uses ChatGPT to rederive a known Jacobian Conjecture counterexample.

Impressed by AI as a mathematical collaborator, but see limited practical impact from this specific result.

1002 pts · 570 comments

Show HN: Bento - An entire PowerPoint in one HTML file (edit+view+data+collab) (bento.page)

Bento packs an entire presentation editor with collaboration into a single HTML file.

Single-file approach praised; technical details on encryption, CRDT, and auto-update explained.

922 pts · 212 comments

John C. Dvorak has died (X (formerly Twitter))

John C. Dvorak, columnist and No Agenda Show host, has died at 74.

Mourning a PC journalism legend, with a side debate over his correct age (74 vs. 80).

831 pts · 282 comments

OverpAId – Fire your CEO. Hire the future (overpaid.lol)

A satirical site pitches an AI CEO replacement for $4,699, mocking executive pay and layoffs.

Debate: Can AI replace a CEO's networking and PR role, or is it just a tool for meritocracy?

662 pts · 347 comments

Are AI labs pelicanmaxxing? (Dylan Castillo)

Analysis shows AI labs likely not gaming the "pelican on a bicycle" SVG benchmark.

Consensus: labs aren't gaming the benchmark, though some question the LLM judge methodology's reliability.

608 pts · 234 comments

GigaToken: ~1000x faster Language model tokenization (GitHub)

Article body wasn't reachable. HN discussion still summarized.

Tokenization speed matters for pretraining, TTFT, and latency-critical decisions.

565 pts · 114 comments

So Reddit has decided that plain HTML is unsafe (cole-k.com)

Reddit requires login for old.reddit.com, citing safety through reduced scraping of plain HTML.

Blame falls on Reddit's AI licensing deals, not safety, as the real motive for the login wall.

556 pts · 573 comments

Passkeys were invented by engineers with zero understanding of consumer brain (X (formerly Twitter))

Passkeys confuse consumers because engineers prioritized security over user understanding.

Two camps: passkeys as phishing-resistant improvement vs. opaque, big-tech lock-in with poor portability.

530 pts · 736 comments

Everyone should know SIMD (Mitchell Hashimoto)

SIMD follows a simple five-step pattern accessible to any programmer.

Two camps: trust the compiler's auto-vectorizer or write SIMD by hand for predictable speedups.

526 pts · 188 comments

The startup's Postgres survival guide (hatchet.run)

A startup engineer's practical guide to moving beyond basic Postgres knowledge.

Thread urges adding backups and monitoring to the guide; pgBackRest recommended by many.

457 pts · 204 comments

Quality non-fiction books are the antithesis of AI slop (resobscura.substack.com)

A researcher built a searchable index of 6,500 prize-winning non-fiction books as an antidote to AI-generated content.

Commenters debated whether book prizes are meaningful signals and whether using AI to build a quality-focused tool undermines the project.

433 pts · 210 comments

I Inspected My Take-Home Interview Project. It Was a Whole Operation (citizendot.github.io)

A take-home interview assignment contained Git hooks that deployed malware to steal cryptocurrency.

Two camps: those urging phishing-style validation of recruiters, and those noting official channels are often unreachable.

411 pts · 116 comments

Making (beej.us)

The author argues that AI-generated output lacks the personal fulfillment of making something oneself.

Two camps: LLMs destroy the joy of making vs. enable projects that would otherwise languish.

406 pts · 162 comments

Businesses with ugly AI menu redesigns (fiddery)

A Filipino-American diner is disappointed by AI-generated menu images at a local restaurant.

AI menus seen as the new signifier of low effort, like chalk signs or MS Word menus.

342 pts · 260 comments

Codeberg Bans Cryptocurrency Projects (codeberg.org)

Codeberg votes to ban cryptocurrency-related projects from its platform.

Split between critics decrying the vague policy and supporters of anti-crypto stance.

317 pts · 523 comments

Late.sh – a command-line Clubhouse for computer people (late.sh)

Late.sh is an SSH-based multiplayer terminal with chat, games, and an artboard.

Dominant sentiment is enthusiastic praise for a nostalgic, feature-rich SSH-based BBS.

315 pts · 123 comments

Does creatine make you smarter? (DYNOMIGHT)

A evidence review asks whether creatine supplementation improves cognitive function, concluding maybe a little.

Split between those skeptical of nootropic claims and those accepting the cautious conclusion

306 pts · 252 comments

Back to Kagi (blog.melashri.net)

A user returns to Kagi after trying alternatives, citing superior search quality.

Strong user loyalty to Kagi, with some reporting rising AI usage costs and debating LLM vs. search.

297 pts · 230 comments

“We have information that Moonshot distilled Fable for the development of K3” (X (formerly Twitter))

US official alleges Moonshot AI distilled Anthropic's Fable model for its K3.

Commenters broadly see hypocrisy in US AI labs complaining about distillation after training on the open internet.

246 pts · 649 comments

Never Enough (Armin Ronacher)

Silicon Valley's AI obsession is driven by fear of falling behind, not rebellion.

Split between those agreeing with the critique and those defending AI as a tool.

219 pts · 96 comments