"Weight of the Soul"?

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Some empirical observations imply that there is a weight loss at the time of death. Some have said this is a few ounces (figures vary). But this in no way reflects the "weight" of the soul. The soul is intangible and possesses no physical attributes such as weight. In fact, the soul is a deep level of mind, even deeper than the personal unconscious. So, then, what is the source of this weight loss? At times it may have been due to imprecise measurements. There might also have been other factors, but I am not qualified to pass scientific judgments on these technical matters. But I do not believe that the weight-experiment is replicable; therefore it is not "scientific."