Evolution of Biological Complexity - History

History

In the 19th century, some scientists such as Jean-Baptiste Lamarck and Ray Lankester believed that all Nature had an innate striving to become more complex with evolution. This belief may reflect then-current ideas of Hegel and Herbert Spencer that all creation was gradually evolving to a higher, more perfect state.

According to this view, the evolution of parasites from an independent organism to another parasite was seen as "devolution" or "degeneration", and contrary to Nature. This view has sometimes been used metaphorically by social theorists and propagandists to decry a class of people as "degenerate parasites". Today, "devolution" is regarded as nonsense; rather, lineages will become simpler or more complicated according to whatever forms have a selective advantage.

Read more about this topic:  Evolution Of Biological Complexity

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