Best of 2025

The blog posts Hacker News loved most in 2025. 4,109 posts.

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3552

Quirks of Common Lisp Types

Humans have a tendency toward binary thinking (pardon the pun). If it's not A, it's B. Perhaps because Lisps have REPLs, they are often thought of from the outside as being dynamic, interpreted languages. Our years of Python have taught us that such languages don't really have strong typing - it's all a wild guess…

3554

Finding Dead Websites

As some of the work planned for Marginalia Search this year has been progressing a bit faster than anticipated, there was time to implement an unplanned change. This post details the implementation of a system for detecting when servers are online, to avoid serving dead links and improve data quality, and for…