Looks like Bret Victor's paragraph was removed from the page? It still talks about "6 principal investigators" but lists 5.
Here's the archive of the page before the edits: https://web.archive.org/web/20171026233121/https://harc.ycr....
http://worrydream.com/HypercardInTheWorld/videos.html
http://worrydream.com/oatmeal/realtalk-tech-teaser-2017-02-2...