Why do you think that the theory of evolution is not scientific? 

If we compare the opinions of two different epistemologists that tell us what science is, we will have two different points of view. So, if we multiply the number of all those who work in this field, that is to say philosophers of science, we will obtain so many different opinions. Science with a capital 'S' does not exist, especially when we compare schools based on the power they acquired, that is to say, a political power that can influence public opinion.