Best of 2021

The blog posts Hacker News loved most in 2021. 5,820 posts.

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The Value of In-House Expertise

An alternate title for this post might be, "Twitter has a kernel team!?". At this point, I've heard that surprised exclamation enough that I've lost count of the number times that's been said to me (I'd guess that it's more than ten but less than a hundred). If we look at trendy companies that are within a couple…