What Would Actually Prove an Afterlife?
For almost all of human history, death has marked the border science could approach but never cross. Religions described souls, heavens, reincarnation and judgment; materialism offered a colder answer in which the brain stops and the person disappears.
Modern medicine has complicated both pictures, because death is increasingly understood not as one instantaneous event but as a biological process during which the heart, circulation, brain and consciousness can fail at different speeds.
And something unexpected has emerged from that narrow territory.
Scientists have recorded organised electrical activity in some dying human brains, detected patterns associated with higher neurological processing during prolonged cardiopulmonary resuscitation, and interviewed cardiac-arrest survivors who describe extraordinarily vivid experiences from periods in which they appeared unconscious.
None of this proves an afterlife. But neither does modern science possess an experiment capable of declaring the mystery closed.