Like all art worthy of the name, Evolution raises more questions and possible interpretations then it is prepared to answer. The following analogies are my subjective opinion alone, which Anna (thankfully) wishes to neither confirm or deny.
In the blanched, washed out afternoon light, three wavering, ghostly young women are in the process of a mysterious dissolution; of being rubbed out, literally erased from the picture. The source of the irradiating unreality is a rip (a tear in the space-time continuum?) in the centre of the composition which is half filled with a column of paint and has almost obscured completely one figure, the remaining lower part of her body is elongated and distorted. The two figures to the right are blurring proportionally to their nearest to the tear.
To deepen the mystery further the only spot of bold colour to be seen is the red in the corner of the cut-off doorway. At first glance the ball (or apple) seems to be floating but upon closer examination appears to actually be in place of a head. At the bottom left of the painting an oddly shaped shadow that apparently belongs to a figure outside of the frame can be seen. The relationship between the main group of three figures, the red ball in the doorway and the shadow is ambiguous and unresolved.
Although it appears to me that Evolution presents a scene of disappearance, the title contradicts this interpretation and suggests that actually the figures are evolving into being. Whether it represents a coming into being or an after-image of an hallucination , Evolution is a vivid snapshot from the kind of nightmare you have while falling to sleep watching a late night movie.