Therefore, it seems to be impossible for people to become immortal through quantum immortality. Nevertheless, the idea remains a fascinating and thought-provoking concept within the realm of theoretical physics, but it is not yet a proven or established scientific fact.

Everett died in bed on July 19, 1982. He was just 51. His son, Mark, then a teenager, remembers finding his father's lifeless body that morning. Feeling the cold body, Mark realized he had no memory of ever touching his dad before.

The American physicist Hugh Everett III, who proposed the many-worlds interpretation of quantum mechanics in his doctoral thesis at Princeton University in 1957. In effect, this implies that the entire universe is described by a gigantic wave function that contains within it all possible realities.

Quantum immortality says that a person will never die. As we know the person bound to die in world 'A' (say) may survive on other worlds 'B', 'C',.... as there are always two possibilities in the form of dying or not dying.