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The Mythology of Category Theory
Article URL: https://www.johndcook.com/blog/2026/05/06/category-mythology/
Comments URL: https://news.ycombinator.com/item?id=48098958
Points: 2
# Comments: 1
FlowFlow, voice notes with on-device RAG in Rust for iOS
Article URL: https://github.com/mirkobozzetto/flowflow
Comments URL: https://news.ycombinator.com/item?id=48098955
Points: 1
# Comments: 0
Left and right shifts are pseudoinverses
Article URL: https://www.johndcook.com/blog/2026/05/11/inverse-shift/
Comments URL: https://news.ycombinator.com/item?id=48098953
Points: 1
# Comments: 0
iOS 18.7.9 cuts off iPhone 11 and later
Article URL: https://support.apple.com/en-us/127111
Comments URL: https://news.ycombinator.com/item?id=48098929
Points: 1
# Comments: 0
Show HN: I made an app full of bugs
Vibe coding is great at producing bugs after all.
Comments URL: https://news.ycombinator.com/item?id=48098928
Points: 1
# Comments: 0
Learning to Discover at Test Time
Article URL: https://test-time-training.github.io/discover/
Comments URL: https://news.ycombinator.com/item?id=48098925
Points: 1
# Comments: 0
This Slim Robot Vacuum Gets in All the Corners of My Home, and It's Currently $700 Off
Google Says Hackers Used AI To Create Zero Day Security Flaw For the First Time
Show HN: Sparky – bedtime stories generated on demand for little kids
My 4-year-old asked me last week for "a story about a dragon who works at a sushi restaurant and is scared of the fish." There is no book for this. There will never be a book for this.
So my friend Frank and I (both with kids around 3–4) built Sparky. You tap a "spark" — dragon, unicorn, pirate, wizard, mermaid, etc. — or hold a button and tell it whatever weird thing your kid wants, and it generates a story and reads it out loud.
One thing funny: drop the kid's name into the story. They pop up like a meerkat — "wait, that's ME?" — and they're locked in for the next five minutes.
Context on why we bothered: Yoto and Toniebox are great but they're $100–200 hardware boxes with curated content. We wanted something that runs in a browser, costs nothing to try, and can make a story about a sushi dragon at 8:47pm on a Tuesday.
Fair warning: we were too cheap to register a real domain, so it lives on one of mine where I've parked various other half-baked experiments. If this turns into something we'll move it. Would love feedback, especially from anyone whose kids have ground them down with weirdly specific story requests.
Comments URL: https://news.ycombinator.com/item?id=48098286
Points: 1
# Comments: 0
I have an idea that could be worth billions, & I'm giving it away for free
A website where you chat with people & share your chats.
It's an alternative to podcasts, & better because people can think better reading & writing instead of listening & speaking, & because they can look up research notes on their desktop & their computer to better inform their readings & writings.
https://www.grandviewresearch.com/static/img/research/podcasting-market.webp
The podcast market size is projected to reach 130.6 billion dollars in 2030.
https://www.grandviewresearch.com/static/img/research/podcasting-market-share.png
Roughly 3/4 of podcasts can be done better as a text-based chat than as an audio-based chat.
Comments URL: https://news.ycombinator.com/item?id=48098282
Points: 1
# Comments: 0
Time Budgeting vs. Money Budgeting
Article URL: https://get168.app/blog/time-budgeting-vs-money-budgeting
Comments URL: https://news.ycombinator.com/item?id=48098270
Points: 1
# Comments: 0
UCLA discovers first stroke rehabilitation drug to repair brain damage
Article URL: https://stemcell.ucla.edu/news/ucla-discovers-first-stroke-rehabilitation-drug-repair-brain-damage
Comments URL: https://news.ycombinator.com/item?id=48098261
Points: 2
# Comments: 0
Show HN: Claude tournaments a Unity WebGL scene across parallel islo sandboxes
Article URL: https://zozo123.github.io/unity-loop-page/
Comments URL: https://news.ycombinator.com/item?id=48098259
Points: 1
# Comments: 0
That post never existed. Stop listening to that thing
Article URL: https://rachelbythebay.com/w/2026/05/05/404/
Comments URL: https://news.ycombinator.com/item?id=48098255
Points: 1
# Comments: 0
Price rises in UK shops slow as retailers apply heavy discounts to lure shoppers
Wikimap: A Map of Wikipedia
Article URL: https://wikimap.wiki/
Comments URL: https://news.ycombinator.com/item?id=48098232
Points: 1
# Comments: 0
CRMs APL Archive
Article URL: https://crms-apl.computerhistory.org/
Comments URL: https://news.ycombinator.com/item?id=48098228
Points: 1
# Comments: 0
Prompt to Chip
Article URL: https://www.prompttochip.com/
Comments URL: https://news.ycombinator.com/item?id=48098220
Points: 2
# Comments: 0
End-to-end encrypted RCS messaging begins rolling out today
Article URL: https://www.apple.com/newsroom/2026/05/end-to-end-encrypted-rcs-messaging-begins-rolling-out-today-in-beta/
Comments URL: https://news.ycombinator.com/item?id=48098219
Points: 1
# Comments: 0
Hackers abuse Google ads, Claude.ai chats to push Mac malware
Article URL: https://www.bleepingcomputer.com/news/security/hackers-abuse-google-ads-claudeai-chats-to-push-mac-malware/
Comments URL: https://news.ycombinator.com/item?id=48098218
Points: 1
# Comments: 0
