I have signed up to give a LW mini-talk. I could in theory talk about various topics in Bayesian statistics and MCMC, but what I am actually interested in discussing right now are the ideas in this post: https://www.lesswrong.com/posts/Rh8v4ba9w5KTb6onD/ongoing-thoughts-on-proportional-voting-methods
If you have read that post, what topic there do you think would be best? It should be something that's not common knowledge or "obvious" to the audience, but also doesn't require too much setup. Assume that I am able to do a decent job of structuring my talk — that is, a substantially better job of setting up and exploring a single idea in a 5-minute chunk than I've done in that essay which is not intended to be a 5-minute chunk.
Feel free to post "answers" here which are general advice and not specific topic suggestions.