The short version is he saw someone's jQuery implementation of Spritz, and made it into a Drupal module. I tested out the module/library, submitted a patch that I found and then thanked @brtopro for all the work he did (see his blog post at https://drupal.psu.edu/content/speed-reader-module-using-drupal-read-everything-faster about this -- Bryan is awesome).
I think this technology is amazing for mobile devices. It allows you to read a lot of information, very fast, on a small screen. If you want to catch up on Treasure Island, check out the demo I made at http://natemillin.com/treasure.