Why is it bad if it learns that I like to read about medieval fortresses, and that it should skip showing me rocket ships, for instance?

Personalization is not inherently bad and I believe personal feeds can be engineered in a way that doesn’t result in echo chambers but in communities.

The problem is capital incentives are not aligned with making these interfaces which is why we have the feeds we have today on Facebook, Twitter, etc. I look forward to the innovations happening on bring-your-own-algo Bluesky.

As a side note, I’m currently building a personalized Hacker News service. I might throw it at Show HN once it gets closer to completion.