Evolution

So recently in biology we have been discussing evolution. The definition used for the class is a change in the frequency of a phenotype in a population. What is a phenotype you ask? It is the physical expression of a gene. Also discussed is that evolution has no real direction. It has no aim to get better or worse. It's simply change. So as I thought about this the random thought crossed my mind that this is true! Evidence being the evolution of fashion. It really has no direction for the better as more and more people are trying to "express" themselves.