Socialism and Evolutionism

There have been two main groundings of Socialism--that it is the inevitable outcome of Dialectical Materialism, and that it corrects the de-humanization of Capitalism.  The first is of dubious value, since Marx-Engels frequently represent Socialism as voluntaristic, and, hence, as transcending a Necessity such as that process.  The limitation of the second is that it pertains to the Good of the Members of a Society, without addressing that of the whole of a Society.  In contrast, a derivation of Socialism from Evolutionism is as follows: The Good of an Organism is Health.  The Health of an Organism entails the Health of each of its Parts.  A Species is an Organism, the Members of which are its Parts.  The Health of an Organism is dependent on the beneficial factors in its environment.  Thus, the Health of an Organism entails that each of its Parts benefits from such environmental factors.  Likewise, the Health of a Species entails that each of its Members benefits from environmental goods.  But, only Socialism guarantees such universal benefiting.  Therefore, Socialism is the best Economic system from an Evolutionist perspective.