[Question] Which rationality posts are begging for further practical development?

Which posts seem to you like they have really important practical implications for how we ought to think and act, but don’t seem to come with enough information about how to use the skills, or to develop them, or even what exactly the relevant skills are?

Context: I’d like to devote many of my hours in the upcoming few months to naturalist study of topics that are critical to fully understanding the most important existing resources in rationality. I mainly have my eye on posts from Eliezer’s Sequences, but I’m also open to other essays, books, and even videos. I’ll be taking extensive notes, and turning them into companion pieces to complement the original essays. (See “Lies, Damn Lies, and Fabricated Options” and “Investigating Fabrication” for an example of what I’m proposing.)