Thoughts on the Nature of Life and Death

The concept of death, particularly in the context of defining when it occurs, is a complex and multifaceted issue that spans various disciplines, from physics to biology to ethics. While physics and mathematics offer precise definitions for concepts like mass and motion, defining life and death in biology remains contentious. The proposed definition of life revolves around the idea of a self-contained configuration of matter constituting a universal computer (Turing machine) that acquires, stores, and acts upon information in its environment for maintenance, preservation, or reproduction. Death, therefore, is seen as the irreversible loss of the information that constitutes an individual, particularly focusing on the destruction of the brain. This “information-theoretic death” emphasizes irreversibility and aligns with physical laws governing entropy.