Roger glanced around the desert once more. Nothing but the cloudless sky and the sand scattering in the wind, with a few cacti dotted around the landscape. With nothing else to do, he checked his magazine, already knowing how many bullets he had. Full. Adjusting...

I think therefore I am. RenΓ© Descartes originally wrote those words in his book entitled Discourse on the Method, and I believe they make for a fitting epigraph to my current predicament, which I will get to shortly. But first I want to discuss the nature...