In the jungles of South America there exists a parasitic plant that lives on the top of trees. It drops its seeds to the ground, where they sprout. The vine-like shoots are attracted to the darkness under a tree. From there, the vine climbs the tree trunk to the top, where it proceeds to sink its roots into the tree, eventually discarding the vine part. This process is repeated with each successive generation. What a fine example of perseverance and risk taking!