``I may look happy, healthy and clean ...
but behind the smile there is a Zerox machine''
Adam Ant, `Zerox'2.1
In this chapter I present a review of some of the current viewpoints and debates on evolution, life and their interrelationship. This is by no means an exhaustive review, but serves to place the work that follows in some context. I also use it as a starting point from which to define more carefully the sense in which I will use words such as `life' and `open-ended evolution' throughout the rest of this thesis.