Hey buddy,

Man, you missed some interesting stuff on Hacker News today, April 29th. Lemme give you the quick rundown.

LibreLingo – Like Duolingo, but Open Source

First off, there's this cool thing called LibreLingo. It's basically like Duolingo, you know, for learning languages, but it's totally free and open source. People were pretty excited about a free alternative. Someone in the comments was talking about how it's different from just translating words, more about actually figuring out what someone means or saying what you want. Seems like a good project.

Firefox Finally Got Tab Groups

Okay, this is a big one for some folks. Firefox officially rolled out tab groups. Remember how people have like a million tabs open? Now you can finally group them together. People in the comments were sharing tips on how they manage their tabs, even with extensions, and some were saying it's about time Firefox got this built-in. Someone even posted some CSS code to hide the tab bar if you use a tree-style tab extension.

That Guy Daring Fireball Wrote About Kagi

You know John Gruber from Daring Fireball? He wrote about trying out Kagi, that paid search engine. He seems to like it. The comments section was, as usual, a big debate about Kagi's pricing and value. Someone mentioned how illegal it is for Kagi to bill people who unsubscribed, which sounds pretty messed up if that's true. Others were defending them, saying they're a small team trying their best.

Only Teslas Exempt from New Tariffs?

This one's kinda wild. Apparently, there are new tariffs on cars, but only Teslas are exempt because they meet some rule about having 85% domestic content. This sparked a huge discussion, obviously. People were talking about trade, politics, and how these rules affect things. There was a lot of back and forth about whether this is fair or just good business for Tesla.

Jepsen Looked at Amazon's Database

You know Jepsen? The guy who tests databases to see if they lose your data? He did a report on Amazon's RDS for PostgreSQL. It's pretty technical, but the gist is he found some issues with consistency, especially with the multi-AZ setup. People in the comments were discussing database isolation levels and how complicated this stuff is, even for experienced engineers.

AI Arguing With Itself?

Someone put up a Show HN about making AI think better by having it argue with itself. It's called "Chain of Recursive Thoughts". The idea is the AI generates different perspectives or arguments internally to come up with a better answer. People thought it was a cool idea, kinda like how humans have internal debates. One person said they already use Gemini like this and it helps them get better results.

Amazon Says They Won't Display Tariff Costs Separately

Following up on that tariff thing, Amazon denied reports that they were planning to show the tariff cost separately to customers. Apparently, the White House called that idea "hostile" or "political". So, yeah, more drama around those new car tariffs and how they show up (or don't show up) when you're buying stuff.

Duolingo Replacing Contractors with AI

And speaking of Duolingo, there was also news that they're replacing some contract workers with AI. This ties into the LibreLingo story a bit, I guess. People were talking about how Duolingo is more about gamification and selling a lifestyle than deep learning for some users. And, of course, the usual debate about AI taking jobs.

Okay, that's the main stuff. Talk later!