Hello, I’m David Hollis, but most folks just call me hollis.

I’m a software developer in Seattle who also does some tabletop gaming and cooking in my spare time. This site contains some information about my personal software projects and a blog with periodic updates on them.

You can reach me via:

You can find (woefully out of date) info about my other hobbies at:

For me, the first challenge for computing science is to discover how to maintain order in a finite, but very large, discrete universe that is intricately intertwined. And a second, but not less important challenge is how to mould what you have achieved in solving the first problem, into a teachable discipline: it does not suffice to hone your own intellect (that will join you in your grave), you must teach others how to hone theirs. The more you concentrate on these two challenges, the clearer you will see that they are only two sides of the same coin: teaching yourself is discovering what is teachable.

Edsger Dijkstra