Not all LW participants need to know advanced math. Human rationality is a broad topic, and someone like Yvain or Alicorn can contribute a lot without engaging the math side of things. What I care about is the signal-to-noise ratio in math discussion threads. In other words, I'm okay with regular ignorance but hate vocal ignorance with a fiery passion.

I propose a simple heuristic: if you see others using unfamiliar math, look it up before commenting. If it relies on other concepts that you don't understand, look them up too, and so on. Yes, it might take you days of frantic digging. It sometimes takes me days full-time, even though I have a math degree. Time spent learning more math is always better invested than time spent in novice-level discussions.