Dr. Duncan MacDougall

Dr. Duncan MacDougall was a physician in the early 20th century, known for his controversial experiment aimed at measuring the weight of the human soul. In 1907, he conducted a series of tests on dying patients, claiming to have found a consistent weight loss of 21 grams at the moment of death, a finding that sparked both intrigue and skepticism. Despite the poor methodology and small sample size of his study, MacDougall's assertion became a cultural touchstone, influencing discussions about the nature of the soul and its existence.