In atheism terminology, god theory – not to be confused with “theory of god”, i.e. theory of the purported existence or nature of god (see: god does not exist) – refers to any god-based theoretical construct, e.g. soul, spirit, karma, afterlife, etc., which has god or the power of god as a component of the principles of the theory; some types of atheists, e.g. spiritual atheists, will not believe in the existence of god, but will continue to adhere to aspects of god theory, e.g. believe in the existence of soul or free will.