The best of Hacker News - July 30, 2025

1.
Study mode

798 points

2.
M8.7 earthquake in Western Pacific, tsunami warning issued

515 points

3.
My 2.5 year old laptop can write Space Invaders in JavaScript now (GLM-4.5 Air)

483 points

4.
Irrelevant facts about cats added to math problems increase LLM errors by 300%

353 points

5.
Show HN: I built an AI that turns any book into a text adventure game

218 points

6.
Learning basic electronics by building fireflies

212 points

7.
RIP Shunsaku Tamiya, the man who made plastic model kits a global obsession

195 points

8.
ACM Transitions to Full Open Access

182 points

9.
iPhone 16 cameras vs. traditional digital cameras

181 points

10.
Launch HN: Hyprnote (YC S25) – An open-source AI meeting notetaker

170 points

11.
FoundationDB: From idea to Apple acquisition [video]

139 points

12.
URL-Driven State in HTMX

139 points

13.
Show HN: Terminal-Bench-RL: Training long-horizon terminal agents with RL

111 points

14.
USB-C for Lightning iPhones

105 points

15.
How the brain increases blood flow on demand

92 points

16.
A month using XMPP (using Snikket) for every call and chat (2023)

92 points

17.
Dropbox Passwords discontinuation

55 points

18.
Two Birds with One Tone: I/Q Signals and Fourier Transform

39 points

19.
Online Ruler – Measuring in inches/centimeters

30 points

20.
From Async/Await to Virtual Threads

22 points

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