[the creator of Xen] Another sketch from Usenix 2008. This was an invited talk by the guy who made Xen, a popular, open source virtual machine program. The talk was interesting, about what they had to do to get the project going, where it's at, and where it's headed. I tried to do something in the drawing that had some sort of hint of Zen and replication.

Another pencil sketch scanned in greyscale. images/Drawings/Sketches/pratt.png