Ask HN: Classic Blog Posts About Computer Science

While there are lists of important publications in Computer Science [1] [2] [3], it appears that there are few or no blog posts on those lists.

What blog posts about Computer Science would you say are classics and should be widely read?

I'll add one:

"What Color Is Your Function?" by Bob Nystrom (2015). [4] Latest HN discussion: [5]

[1]: https://en.wikipedia.org/wiki/List_of_important_publications_in_computer_science

[2]: https://news.ycombinator.com/item?id=9443028

[3]: https://news.ycombinator.com/item?id=27892076

[4]: https://journal.stuffwithstuff.com/2015/02/01/what-color-is-your-function/

[5]: https://news.ycombinator.com/item?id=28657358