The Definition of Atheism and Belief System

According to the caller, atheism is a belief system because it involves multiple layers of assumptions and claims. However, the caller's definition is not widely accepted and does not align with common usage. The commonly accepted definition of atheism is a lack of belief in God or gods. Additionally, a belief system is a set of principles or tenets that form a basis of understanding, interpretation, and evaluation of the world. Based on these commonly accepted definitions, atheism does not qualify as a belief system.