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OpenAI: "We use ... de-identified data to improve ChatGPT"

https://twitter.com/markchen90/status/2097400166554993041
1•nycdatasci•3m ago•1 comments

"What Is an 'AI Warning Shot'?" (2024)

https://gwern.net/blog/2024/sydney
1•simonpure•7m ago•0 comments

Show HN: TUI Markdown reader with beeline support

https://github.com/seymores/mdr
1•seymores•9m ago•0 comments

Better coding agents need more than better models

https://github.com/Wholiver/metis
2•oliverhuchenrui•12m ago•0 comments

Your built-in router VPN might be more trouble than it's worth

https://tailscale.com/blog/built-in-router-nas-vpns
1•soheilpro•15m ago•0 comments

How Poor People Buy Cars

https://abio.substack.com/p/how-poor-people-buy-cars
8•barry-cotter•17m ago•0 comments

Dopamine Sites Sell Nothing, and People Cannot Get Enough

https://www.nytimes.com/2026/09/11/world/asia/dopamine-sites-popularity.html
3•mistersquid•17m ago•0 comments

What Is Bending Spoons?

https://www.s-1.site/s/bending-spoons-a-capital-cycle-play.html
2•anthonybourdain•17m ago•0 comments

ASI existential risk: reconsidering alignment as a goal

https://michaelnotebook.com/xriskbrief/
1•vinhnx•18m ago•0 comments

Why Your Memory API Benchmarks Are Probably Inflated and Misleading

https://chatsorter.com
1•JacobH1234•20m ago•0 comments

Cohere's North Mini Code Megakernel Serving Engine

https://cohere.com/blog/megakernels
2•gmays•25m ago•0 comments

Build Agentic Memory That Keeps Your Loops Alive and Sharpens Them Every Run

https://memanto.ai/blog/agentic-memory-course-keep-loops-alive
1•supportm•28m ago•0 comments

1.1.1.1 now supports post-quantum DNSSEC, all 2,420 bytes of it

https://blog.cloudflare.com/post-quantum-dnssec-1111/
4•vg•31m ago•0 comments

Preview Your Website on iPhone Duo

https://progressier.com/iphone-duo-simulator
1•kbst•31m ago•0 comments

Reduced AI cheating on a long task from 72% to 0 with 190 token agreement prompt

https://www.echohive.ai/grok-integrity-agreement-less-cheating
1•echohive42•32m ago•0 comments

The Last Essay

https://medium.com/human-parts/the-last-essay-e8ad0b0aa921
1•kashnote•35m ago•0 comments

Proof of Well-ordering of Y sequence

https://github.com/Phyrion1343/1Y-Well-Ordering-Lean/tree/main
2•nkochavi•37m ago•1 comments

river-classic - dynamic tiling Wayland compositor with flexible configuration

https://codeberg.org/river/river-classic
1•modinfo•38m ago•0 comments

Mathematicians Confront the AI Apocalypse

https://www.scientificamerican.com/article/mathematicians-confront-the-ai-apocalypse/
3•jonbaer•38m ago•0 comments

Aiope – An on-device AI agent for Android (terminal, browser, SSH, MCP)

https://github.com/XNet-NGO/aiope
3•xnet-admin•42m ago•0 comments

Discovery Loop is raising again, now at $50B valuation

https://www.businessinsider.com/jeff-deans-startup-discovery-loop-is-eyeing-a-valuation-2026-9
2•utiiiD•49m ago•0 comments

Story Beyond the Eye: Glyph Positions Break PDF Text Redaction

https://arxiv.org/abs/2206.02285
1•jumpocelot•50m ago•0 comments

Harness as a Service

https://www.harnessasaservice.dev/
1•iacguy•51m ago•0 comments

Micron's Taiwan workers to get rewards worth up to 68 months of pay

https://www.reuters.com/world/asia-pacific/microns-taiwan-workers-get-rewards-worth-up-68-months-...
4•teleforce•51m ago•0 comments

Dance MIDI Sample Pack Creator

https://monictheory.com/genre/dance/
1•song_synth•55m ago•0 comments

Hip Hop MIDI Sample Pack Creator

https://monictheory.com/genre/hip-hop/
1•song_synth•55m ago•0 comments

Military aircraft reportedly blamed for UK air traffic control outage

https://www.theguardian.com/world/2026/sep/12/military-aircraft-reportedly-blamed-for-uk-air-traf...
1•tmnvix•1h ago•0 comments

Show HN: Fog 2.0: I removed the AI auto-organizing I built my first app around

https://apps.apple.com/us/app/smart-notes-folders-fog/id6760272134
1•akshatsaladi•1h ago•0 comments

Surviving What I Can't Forgive

https://www.thecut.com/article/surviving-without-forgiveness.html
1•littlexsparkee•1h ago•1 comments

iPhone Duo and iPhone 18 Pro – Not Justifiable

3•wwolfson97•1h ago•7 comments
Open in hackernews

Ask HN: Why is big O often used in CS when omega or theta should be used?

2•amichail•1y ago
Do most people not know about omega and theta or perhaps they intentionally misuse asymptotic notation?

Comments

adrianN•1y ago
Finding lower bounds is generally more difficult.
amichail•1y ago
People often use big O notation in all cases including for lower bounds.
adrianN•1y ago
BigO for lower bounds is plain wrong
numpad0•1y ago
Those aren't in the ASCII table.
compressedgas•1y ago
I've found some people on a well known QA site to be so strict with big-O notation that I don't use it anymore and instead only refer to constant, linear, quadratic time and so on. Even when O(1), O(n), O(n^2) would be actually easier to write even if they are technically wrong.