A Diagnostician was one of the hospital elite, a being whose mind was considered stable enough to retain six, seven, and in a few cases, ten physiology tapes simultaneously. To these datacrammed minds were given projects such as original research in xenological medicine and the treatment of new diseases in hitherto unknown life-forms.
But the tapes did not impart only physiological data. Rather, the complete memory and personality of the entity who had possessed that knowledge was transferred as well. In effect, a Diagnosticianan subjected himself or itself voluntarily to the most drastic form of schizophrenia. The entities apparently sharing a Diagnostician’s mind could well be aggressive, unpleasant individuals-geniuses, whether medical or otherwise, were rarely pleasant people-with all sorts of peeves and phobias.
The original personality was never submerged completely, but depending on the case or research project currently being worked on and the depth of concentration required for it, one could never be sure of a Diagnostician’s reaction to any request that was not of a medical nature. Even then it was considered good manners to find out who or what kind of personality was in partial mental control of the entity concerned before saying anything at all. As a class they were not people one gave orders to, and even the hospital’s Chief Psychologist O’Mara had to treat them with a certain degree of circumspection.
….. So I’m afraid you can’t just tell them to go away, Captain,” Murchison went on, “and the seniors accompanying those Diagnosticians will have sound medical reasons, as well as non-medical ones, for being here. You should also remember that for the past two weeks they have been checking us practically cell by cell, and they might become even more thorough if we were to suggest that they stop wasting time talking history to the scoutship crew and-”
“Not that,” said the Captain hurriedly, and sighed. “But Thornnastor seems a friendly enough being, if a bit big and awkward, and it is our most frequent visitor. Could you suggest to it, ma’am, that if it came less often and without its medical retinue. . .
Murchison shook her head firmly. “Thornnastor is Diagnosticianin-Charge in Pathology and as such is the hospital’s senior Diagnostician. It is also a source of news, a friend, and my head of department. Anyway, I enjoy Thorny’s visits. You may think it odd that a Tralthan FGLI, an oversized, elephantine, six-legged, warmblooded oxygen-breather with four manipulatory appendages and more eyes than seems decent should relish discussing a juicy piece of gossip from the SNLU section of the methane wards. You may even wonder how anything of a scandalous nature could occur between two intelligent crystalline entities living at minus one hundred and fifty degrees centigrade, or why their off-duty activities are of such interest to a warm-blooded oxygen-breather. But you must understand that Thorny’s feeling for other e-ts, and even for us Earth-humans, is unique. It is, you see, one of our most stable and well-integrated multi-personalities . .
Fletcher held up both hands in a gesture of surrender. “As well as possessing the ability to instill a degree of personal loyalty in its staff, which is unusual, to say the least. All right, ma’am, you’ve convinced me. I am no longer ignorant about Diagnosticians, and I can do nothing about their overrunning my ship.”
“I’m afraid not, Captain,” Murchison agreed sympathetically. “Only O’Mara could do something about that. But he is very fond of his Diagnosticians and of saying that any being sane enough to be a Diagnostician is mad. .
While Murchison and Fletcher had been speaking, the illumination in the dining compartment had undergone a subtle change, caused by the vision screen lighting up to show the craggy features of the Chief Psychologist.
“Why is it that every time I break in on a conversation I find people talking about me,” O’Mara asked sourly. “But don’t apologize or explain; you would strain my credulity. Conway, Fletcher, I have news for you. Doctor, you can discard that spacesuit, reconnect your cabin to the ship’s air system, and resume eating and direct physical contact with your colleagues.” He smiled faintly, but did not look at Murchison as he went on. “The ship has been cleared as free from infection, but frankly, this business has uncovered a serious weakness in patient reception procedures.