Ask HN: What books changed the way you think about almost everything?

"Thinking in Systems: A Primer" by Donella Meadows changed how I approached designing/troubleshooting software systems as well as changed how I think about political policy decisions and their results.

"Object Thinking" by David West dramatically altered how I approach designing OO systems. I especially liked the chapter(s) where he used different real-world metaphors for designing systems. For example, asynchronous communication (email) is often more appropriate than synchronous communication (calling someone on the phone). Delegation of tasks without "micromanaging" (i.e tell don't ask).

"Ever Wonder Why?" by Thomas Sowell gave me an insight into some of the underpinnings of Conservative thought. I'd never had the opportunity to hear any of the arguments he brings up in college or in my own liberal social groups.

It's an explanation that makes sense out of otherwise nonsensical human habits of cultures (tribal, ancient and modern).

If you're curious and want to read something enjoyable—he's a decent writer—check out "Cows, Pigs, Wars and Witches" (preferably one of the later editions), or for something a little denser: "Cannibals and Kings".

Presents a compelling case for being optimistic that economic growth really will keep making the world continually better on average, and in particular explores the reasons why the contrary position is often so prevalent in the media, popular opinion etc.

Regardless of whether you agree with the thesis of the book per se it's a fascinating read which will definitely give you a lot of new perspective on debates on big topics - things that come up often on HN such as AI, climate change, international relations etc. I thoroughly recommend it.