A better example of life might be a computer that randomly generates a colored shape (red triangle, blue circle, etc) and invites passersby to take the shape and add it to a collage. If the passerby thinks the shape doesn't fit well into the growing picture, he can reject it. Over time, the collage will change. Some people will see a person forming in it, so they'll add a circle to the top for a head. Another will come along and think it looks like the Eiffel tower, and so they'll add a triangle to the top. After hundreds of shapes get placed, the image might get very well defined.
If you took away the computer and left the collage, an observer would surely think some single artist designed the collage from scratch, never suspecting that all the components were formed randomly, and placed one at a time by forces that never knew what the end result would be.
The people placing the shapes would be following the rule, "Make it look more like whatever it looks like it is trying to be." Natural selection does the same thing with existing life forms and mutations, following the rule, "Keep what survives and reproduces."
Dave