Here I am near the top of Cathedral Rock in Sedona. (And yes, it was a long way down.) From a distance, Cathedral actually looks like some impossible archaeological ruin. It was all-too-easy to imagine myself on a terraformed Mars a few thousand years in the future; I can't think of a better place to deliver a presentation on the Red Planet.





This picture was taken by Marco, a friend of Peter. We celebrated reaching the top -- a precipitous niche adjacent to a a cluster of biomorphic-looking rock columns -- by spontaneously reciting Roy Batty's final monologue from "Blade Runner."

("I've seen things you people wouldn't believe . . .")