The beautiful simplicity of this picture raises the intriguing question: might it be possible to instil these processes into a virtual world, and, in so doing, to unleash an on-going evolutionary process which populates that world with a rich ecosystem of complex virtual organisms? Attempts to do precisely this have a history almost as long as that of the modern digital computer itself. I will review the current state of the art, and ask what obstacles remain on the way to realising this goal.
I am currently writing an book chapter on this topic for the forthcoming Oxford Handbook of Virtuality, and would welcome any comments, feedback and suggestions during the seminar.