The question we propose to address here, then, is that of how valid and objective the diagnostic process used to arrive at this conclusion in fact is. To what extent can psychiatrists, psychologists, neurologists or other physicians gauge Swedenborg’s mental status? Their perspective certainly adds another dimension to the possible viewpoints on Swedenborg’s claims. However, I think their contribution is less authoritative regarding the specific, final answer on this matter than nonprofessionals may think. As with those other groups, subjective bias enters in, and in fact is a constant concern to professionals in all medical diagnosis and treatment studies. They are well aware that no one is objective and that the best we can do is only to broaden our subjectivity enough that it becomes serviceably close to reality. We will thus review here some of the subjective factors in diagnosis.