Relating the effect to a cause makes the man think. He is finally driven to consider who he is himself.

To explain evolution Sri Bhagavan continued:  One sees an edifice in his dream. It rises up all of a sudden. Then he begins to think how it should have been already built brick by brick by so many labourers during such a long time. Yet he does not see the builders working. So also with the theory of evolution. Because he finds himself a man he thinks that he has developed to that stage from the primal state of the amoeba.

Devotee:  It is an illustration of the saying that he sees the universe full of cause and effect Visram pasyati karyakaranataya.

Ramana Maharishi:  Yes. The man always traces an effect to a cause, there must be a cause for the cause, the argument becomes interminable. Relating the effect to a cause makes the man think. He is finally driven to consider who he is himself. When he knows the Self there is Perfect Peace. It is for that consummation that man is evolved.