Naturalism
From RationalWiki
Naturalism is the philosophical doctrine that the observable physical world is all there is.
Most philosophers of science adhere strictly to this view and positively deny that any supernatural or miraculous effects or forces are possible; usually this goes along with atheism. A few others believe there are other ways of knowing.
The philosophy of methodological naturalism assumes that there is no way to contact or detect the supernatural. Because supernatural, intelligent forces - if they were to exist - are claimed to be be unpredictable and hence unrepeatable, scientists adhering to the scientific method by necessity must ignore the possibility of supernatural or magical intervention in the physical world. In order for it to be science everything must be explained by natural laws and principles.
Arrayed against naturalism are religious schools of thought which posit the existence of the supernatural, and that the supernatural somehow interacts with the natural world. In order to compete with science they have attempted to create "scientific theories" like Intelligent Design which aim to demonstrate signs of supernatural intervention in natural phenomena.
