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How to cut back on social media addiction

https://www.shuaibkhan.com/p/how-to-cut-back-on-social-media-addiction
1•shuaib•24s ago•0 comments

Show HN: Z8Log – Structured logging your AI coding agent can query

https://z8log.com/welcome
1•relatedcode•1m ago•0 comments

Trusted directories for listing your Mac app

https://www.reddit.com/r/SideProject/s/OUdUEmRdMO
1•a_chmerev•1m ago•0 comments

RippleNav – A web instrument provides real-time visual feedback on thought focus

https://access.ripplenav.org/
1•RRwood•3m ago•0 comments

Saudi's Ceer unveils first EVs

https://www.reuters.com/world/middle-east/saudis-ceer-unveils-first-evs-bid-build-regional-auto-p...
1•Propelloni•5m ago•0 comments

Welcome Silona Bonewald, New MetaBrainz Foundation Executive Director

https://blog.metabrainz.org/2026/09/22/welcome-silona-bonewald-new-metabrainz-foundation-executiv...
1•aerozol•5m ago•1 comments

Show HN: Easytris – Tetris that wants you to win

https://medv.io/easytris/
1•medv•7m ago•0 comments

A Tribute to Donald Knuth (2024)

https://paramrathour.github.io/blog/knuth/
1•signa11•8m ago•0 comments

Create AI Image Free – No Sign-Up Needed

https://www.createaiimage.net/
1•wsm123456•8m ago•0 comments

Scanner says the HTML attachment is clean. What happens when you open it?

https://mohitkhare.com/blog/file-attack-html-smuggling/
1•mkfeuhrer•11m ago•0 comments

Chewbacca's Ancestor Is Real

https://maxhawtdawg.com/
1•zacksiri•11m ago•0 comments

The Set of Math-Sterpieces

https://paramrathour.github.io/blog/math-book-recommendations/
1•signa11•14m ago•0 comments

Reverse-Engineering Jane Street's ASIC

https://mooofin.github.io/portfolio/blog/jane-street-asic.html
1•allenleee•14m ago•0 comments

How people are testing AI agents?

1•sanathbhat•15m ago•0 comments

Frontier Overhangs

https://stratechery.com/2026/frontier-overhangs/
1•tosh•19m ago•0 comments

Some Old Expectations for the New Apple

https://taoofmac.com/space/blog/2026/09/22/0709
2•rcarmo•20m ago•0 comments

Physics Problem Finder

https://beneke7.github.io/physics-problems-corpus/
1•bbene•22m ago•0 comments

The Armored Sarcophagus Saving Ukrainian Soldiers

https://www.theatlantic.com/international/2026/09/ukraine-frontline-medical-evacuations/688638/
1•mkesper•24m ago•0 comments

OpenCode Reloaded

https://anoma.ly/notes/opencode-reloaded/
2•pretext•28m ago•0 comments

Proposed Group: Browser Data Portability Community Group

https://www.w3.org/community/blog/2026/09/11/proposed-group-browser-data-portability-community-gr...
2•enos_feedler•33m ago•1 comments

Raspberry Pi locks down RAM upgrades in Firmware [video]

https://www.youtube.com/watch?v=ltofM26akZQ
1•juliethefoxcoon•36m ago•0 comments

Orphaned VMs: Running VMs Uninterrupted While Host Kernel Is Offline

https://www.phoronix.com/news/Orphaned-VMs-Linux-Patches
1•daandewit•37m ago•0 comments

0x025 – System One Models (Jev)

https://unzip.dev/0x025-system-one-models/
1•vismit2000•37m ago•0 comments

Xenobiome Command – a colony SIM that runs offline in the browser

https://play.xenobiome.net/?src=hn
1•jonnyka•42m ago•0 comments

Skill and UI kit to understand PRs faster

https://github.com/annanay25/explain-pr
2•annanay•46m ago•1 comments

She died at the San Diego border. A surveillance camera was in plain sight

https://www.technologyreview.com/2026/09/21/1144170/border-towers-surveillance-feature/
1•joozio•49m ago•0 comments

Move On – export your AI chats, file GDPR deletion, escalate if ignored

https://github.com/ur-grue/move-on
1•ur-grue•49m ago•0 comments

Show HN: I made ShipStreak to keep daily shipping gaps public

https://www.shipstreak.space/?via=hn
1•kljr_dev•50m ago•0 comments

Pakistan Orders Hospital Beds Clear for Mass Casualty Ahead of Protest

https://www.dropsitenews.com/p/pakistan-military-protest-imran-khan-sisters-detained-hospitals-beds
1•xbmcuser•53m ago•0 comments

Ask HN: Is Astra's writing starting to bother anyone else?

2•demibabs•53m ago•2 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.