The 21 Grams Theory.
On 10 April 1901, an unusual experiment was conducted in Dorchester, Massachusetts. Dr. Duncan MacDougall was going to prove that the human soul had mass, and was therefore, measurable. Dr. MacDougall conducted this experiment on six dying patients who were placed on specially made Fairbanks weight scales just prior to their deaths. Dr. MacDougall’s intention was to weigh each body before and after death to determine any differences measured by the delicate scales. The patients were selected based upon their imminent death. Once the patient died, an interesting event occurred. Suddenly, coincident with death, the beam end dropped with an audible stroke hitting against the lower limiting bar and remaining there with no rebound. The loss was ascertained to be three-fourths of an ounce.
The experiment continued on the next patient with the same results. A quote from 1907 New York Times article captures the historic moment:“ The instant life ceased the opposite scale pan fell with a suddenness that was astonishing – as if something had been suddenly lifted from the body. Immediately all the usual deductions were made for physical loss of weight, and it was discovered that there was still a full ounce of weight unaccounted for.” Not all the patients lost the same weight, but they did lose something that could not be accounted for. Unfortunately, only four of the six patient’s results could be counted due to mechanical failures or the patient dying prior to the test equipment being in place. Everything was taken into account, from the air in the lungs to bodily fluids. An interesting variation occurred on the third patient, who maintained his same weight immediately upon death. But after one minute, he lost about an ounce of weight. Dr. MacDougall explained this discrepancy as follows: “I believe that in this case, that of a phlegmatic man slow of thought and action, that the soul remained suspended in the body after death, during the minute that elapsed before its freedom. There is no other way of accounting for it, and it is what might be expected to happen in a man of the subject’s temperament.”
Following the experiment, it was determined that the average weight loss of each person was ¾ of an ounce. Dr. MacDougall concluded that a human soul weighed 21 grams. Although this experiment would be considered unethical in modern times, it is still a peculiarity that sparks a lot of criticism, ranging from the methodology used to various religious implications.
Of Note: A great movie titled “21 Grams” made in 2003 references Dr. MacDougall’s experiments.
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