https://www.lesswrong.com/posts/jMTbQj9XB5ah2maup/similarity-clusters
https://www.lesswrong.com/posts/cFzC996D7Jjds3vS9/arguing-by-definition
https://www.lesswrong.com/posts/jMTbQj9XB5ah2maup/similarity-clusters
https://www.lesswrong.com/posts/cFzC996D7Jjds3vS9/arguing-by-definition