I read an interesting short math paper today. It came from a recent Oxford mathematics competition, titled Mathematics Behind Jujutsu Kaisen: Gojo Satoru’s Infinity. It does something fun: it treats Gojo Satoru’s Limitless technique in Jujutsu Kaisen as a mathematical object.

This kind of article can easily turn into a joke. This one does not. It does not stop at “anime settings are fun.” It keeps pushing Gojo’s technique into actual mathematical language. The real question it asks is:

Today I saw a fun project on Hacker News: Performative UI.

Its self-description is just one simple sentence: an “AI-native React Components” library. But after clicking around for a few seconds, you realize every component feels familiar. It is not trying to be a serious, stable component library like shadcn/ui. It is directly targeting the highly homogenized AI startup website style.

In other words, it packages the kind of thing you often see when opening a new product site, where the AI smell almost spills out of the screen:

A few days ago, a Hacker News post became fairly popular. Its title was I’m tired of talking to AI. The original article is very short and takes about a minute to read, but the scene it describes hit me hard.

The author first says that he found some GitHub repositories spreading malware, so he asked AI what to do. AI gave him a useless answer. Later he opened a GitHub discussion, and someone replied with almost exactly the same content as the AI answer. After he pointed that out, the comment was deleted. Then another person came along and posted the same kind of AI answer again.

At some U.S. university commencement ceremonies last week, the audience started booing as soon as speakers praised AI. The speakers may have been surprised, but I think many ordinary workers and students like us can understand the reaction.

Commencement is already a delicate occasion. In the audience are young people about to enter the job market. Many may still carry tuition debt, have just sent out resumes, and may not have stable internships or full-time offers. On stage, the guests are often already successful. They begin, in a relaxed tone, to tell students: AI is the future, and you should embrace change.

On May 11, 2026, online education platform Coursera announced that it had completed its merger with Udemy. The combined company will continue to use the Coursera name and trade on the New York Stock Exchange under the ticker COUR. Udemy shares will be delisted from Nasdaq.

According to the official announcement, the combined platform reaches more than 290 million learners, 18,000 enterprise customers, 95,000 content creators, over 315,000 courses, and hundreds of university and industry partners.

On April 27, 2026, OpenAI and Microsoft released statements at the same time: the two companies had revised their partnership agreement.

You could call it a “breakup.” The reason is not hard to understand. Microsoft no longer has exclusive licensing rights to OpenAI’s models and products. OpenAI can offer products on any cloud platform. Microsoft will also stop paying revenue share to OpenAI. For the past few years, these two companies were almost treated as one AI camp. Now there is suddenly a line between them, and that is big news.