There is no "in reverse" here. Evolution is neither toward greatness nor weakness, smallness, nor largeness. It is only about change in the frequency of characteristics (alleles, really) in the population.
It is you (us) who see weaker animals as a step "backwards;" remember, the weak ones are those that are succeeding when we cull the ablest animals. Ability is an illusion - a false measure of success - the only success is by those animals whose flavors of genes increase in the population.









Discuss