SURVIVAL OF THE FITTEST. “The environment communicates a negative message (in the extreme, immediate death) to unfit entities. If entities in the population have a finite lifetime, the potential offspring of entities that do not respond effectively to the environment do not become a part of the population for the next generation.” Rephrased as elimination of the weakest through death.
http://sjsu.rudyrucker.com/~shruti.parihar/paper/