For my sins I was one of the original co-founders of PanQuake - involved in the initial architectural design and scoping. “technical director and development team lead” I lasted barely two weeks as a paid “employee” before being replaced after a falling out. I maintain hope that the promises of open source transparency will be fulfilled. I did have some of those slides (and the napkin sketches) before the IP was wrapped up in Cook Islands Corporations and more tightly controlled. Those were the days.
https://youtu.be/7n06ElYp_8A?t=115m0s (1h55m or so)