For non-fiction I mostly read some varient of history. Sometimes it's tech history, sometimes sociological, sometimes something else. I've also mixed in other books instead of creating seperate pages.
These are books that I have at least looked at. All to often I skip sections of history books to hit just areas I'm interested in.
Technology in the Ancient World - Henry Hodge
Cathederal, Forge & Waterwheel - Frances Gies
Norton History of Technology - Donal Cardwell
Guns, Germs & Steel:
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