- The extended internet universe can be split into a 2x2 grid where the x-axis is the private-to-public boundary and the y-axis is high- to low-risk. - The privacy boundary can be marked by email. - The risk boundary can be marked by passwords and other security. - The quadrants: ![[VankateshRao_fourquadrants.webp]] - [[Rao, Venkatesh]]’s map of the internet: ![](https://substackcdn.com/image/fetch/w_1456,c_limit,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F7e513aba-9133-4f46-a687-3cbbacd0e6cd_800x500.png)