As you are probably all aware, on Wednesday Geordie Williamson gave a plenary lecture at the International Congress of Mathematicians in Rio de Janeiro. This post is to collect a few related links (I will update it as new ones become available): YouTube video: https://www.youtube.com/watch?v=-3q6C558yog&t=0s&list=PLOrjUJw2wOmW5F1S9OGR6esa9XpTOTq6e&index=18 ICM news story: http://www.icm2018.org/wp/2018/08/08/geordie-williamson-semi-simplicity-is-like-the-air-we-breathe/ University of Sydney news story: https://sydney.edu.au/news-opinion/news/2018/08/09/australians-on-a-roll-at-world-maths-congress.html Slides of the talk: http://www.maths.usyd.edu.au/u/geordie/ICM.pdf