Abstract
It seems that no scientific study has been able to find evidence of an afterlife, and the mechanism of consciousness is two of the most challenging questions. Here, I show a hypothesis for consciousness and the probability of an afterlife through three simple thought experiments and theoretical evidence, yet more studies need to precisely understand the mechanism. I found that consciousness might be discussed from three fundamental theories: (1) quantum-level particles of functional neurons in the brain according to quantum mechanics, (2) the brain and its large larger matter than quantum particles behave to general relativity, and (3) a new theory is needed for the function of two ultraquantum particles. When a brain dies, the ultraquantum particles might emit from the dead brain and simultaneously bond with the suitable early vacant nervous system anywhere in the universe/s, creating a new life with the impact of new nurture.