Thinking, Fast and Slow

I finished it, and it goes straight to S tier. Kahneman won a Nobel for demonstrating that the rational actor economics assumes doesn't exist, and the spine of the book is the split between System 1, the fast, automatic, intuitive part of your brain, and System 2, the slow and effortful one that believes it's in charge and mostly isn't. The experiments are beautiful and the writing is far better than a book this academic has any right to be. My one real complaint stands: it isn't very practical. Kahneman is explaining why you're wrong, not handing you a procedure for being less wrong, and he's honest about it: decades of studying these biases didn't stop him from falling for them. So this is a book that changes how you see your own thinking rather than one you act on Monday morning. Normally not being practical would cap a book's tier for me. Here it doesn't, because understanding the machinery of your own biases is the foundation every other decision sits on. Fantastic, not actionable, and worth it anyway.