It's been a while since I've read the book, but it's got rather a lot about how to keep people confused for your own purposes. Slytherins certainly wouldn't care that Lewis was against such methods.
I don't think the advice would be practical since it assumes the confuser has access to the confusee's mind, both the ability to inspect it's contents as well as plant and/or derail trains of thought.
A while back in the Columbus Rationality group, we started wondering: What books would the Harry Potter and the Methods of Rationality houses have in each of their libraries? We had fun categorizing different subjects:
And so, I found myself taking all my books off their shelves this weekend and picking the best to represent each rationality!House and made them into Facebook cover-image-sized pictures. Click each image to see it larger, with a list on the left:
(first posted at Measure of Doubt)
I’m always open to book recommendations and suggestions for good fits. What other books would be especially appropriate for each shelf?