It's just a small issue. The dimensionality slide link is not working. An update link or a new slide might be needed. <img width="1214" alt="Screen Shot 2020-06-17 at 1 19 42 PM" src="https://user-images.githubusercontent.com/30990195/84951366-2ed49e80-b0a5-11ea-9aee-b254d504533e.png">