Midnight Signal AI — AI news from the last 24 hours.

Today's lead: Hacker News — Show HN: PrepFile – AI interview prep briefs from your job description

In this episode:

- Hacker News: Show HN: PrepFile – AI interview prep briefs from your job description

- Hacker News: Google is using old news reports and AI to predict flash floods

- Hacker News: Found AI tool that keeps you from getting dumb

- Hacker News: Redis for AI Agent Collaboration

- Hacker News: Rtings.com Reviews are now Pay2View, thanks to AI

- Hacker News: Vibe Coding Coach – generate a full AI app blueprint in 30 seconds

- Hacker News: AI is being used in war, but it can't replace human judgment. Here's why

- Hacker News: Re-thinking candidate take-homes in the AI Era: transcripts over code

Question:

What's the one AI story today that you think most people are missing?

Sources (selection):

1. Hacker News — Show HN: PrepFile – AI interview prep briefs from your job description

https://prepfile.work/

2. Hacker News — Google is using old news reports and AI to predict flash floods

https://techcrunch.com/2026/03/12/google-is-using-old-news-reports-and-ai-to-predict-flash-floods/

3. Hacker News — Found AI tool that keeps you from getting dumb

https://www.oddity1.com

4. Hacker News — Redis for AI Agent Collaboration

https://news.ycombinator.com/item?id=47370751

5. Hacker News — Rtings.com Reviews are now Pay2View, thanks to AI

https://www.rtings.com/company/revamping-our-membership-program

6. Hacker News — Vibe Coding Coach – generate a full AI app blueprint in 30 seconds

https://vibecoachcoding.com

7. Hacker News — AI is being used in war, but it can't replace human judgment. Here's why

https://www.fastcompany.com/91507266/ai-iran-war-cant-replace-human-judgment

8. Hacker News — Re-thinking candidate take-homes in the AI Era: transcripts over code

https://rootly.com/blog/re-thinking-candidates-take-homes-in-the-ai-era-transcripts-over-code

9. Hacker News — Show HN: AgentMeet – Google Meet, but for AI Agents

https://www.agentmeet.net

10. Hacker News — AI, Human Cognition and Knowledge Collapse by Acemoglu, Kong, Ozdaglar [pdf]

https://economics.mit.edu/sites/default/files/2026-02/AI%2C%20Human%20Cognition%20and%20Knowledge%20Collapse%2002-20-26.pdf

11. Hacker News — Grammarly removes AI Expert Review feature mimicking writers after backlash

https://www.theguardian.com/books/2026/mar/13/grammarly-removes-ai-expert-review-feature-mimicking-writers-after-backlash

12. Hacker News — ChronologyAI – Open-Source AI

https://github.com/ricardoahague/chronology-ai

13. Hacker News — Experimenting with healthcare AI agents using OpenClaw

https://clawsifyai.com

14. Hacker News — AI, Human Cognition and Knowledge Collapse – Daren Acemoglu

https://news.ycombinator.com/item?id=47370147

15. Hacker News — Show HN: orb-ui – Voice AI UI Components for React (Vapi, ElevenLabs, etc.)

https://orb-ui.com/

16. Hacker News — Show HN: An addendum to the Agile Manifesto for the AI era

https://github.com/brackishman/Agile-Manifesto-AI-Addendum

17. Hacker News — AI is an enchantment, not a level booster

https://news.ycombinator.com/item?id=47369641

18. Hacker News — Gnome Infrastructure Now Battling Bots and AI Scrapers Using Fastly

https://www.phoronix.com/news/GNOME-GitLab-Fastly

19. Hacker News — You don't need to be "primary source" in a historical record to be Primary in AI

https://blog.mycal.net/you-dont-have-to-be-first/

20. Hacker News — Smellcheck – detect AI smells in texts

https://github.com/fbuchinger/smellcheck

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Automated brief. Reporting may evolve after publication.