It was looking at the Kelgian beside her, the one who had asked the original question, but Cha Thrat spoke on impulse.
“It seems to me that the Hudlars are fortunate,” she said, “in that they are not troubled by the situation of the members of one sex considering themselves innately superior to the other, as is the case on Sommaradva …
“And on too many other worlds of the Federation,” the Kelgian interjected, the fur rising into tufts behind itshead.
“… I thank the Hudlar for its explanation,” Cha Thratwent on, “but I was surprised to find that it is presently a male. My first thought, based on observation of what I mistakenly assumed to be cosmetic paint on its body, was that it was female.”
The Hudlar’s speaking membrane began to vibrate, but Cresk-Sar held its hand up for silence and said, “What are your second thoughts?”
Confused, she stared at the hairy little creature, wondering what she was expected to say.
“Come, come,” Cresk-Sar barked. “Tell us what other thoughts, observations, assumptions, mistaken or otherwise, have been going through your Sommaradvan mind regarding this life-form. Think and speak clearly.”
Cha Thrat turned all her eyes on it in a way that, had it been a Sommaradvan, would have elicited an immediate verbal and physical response. She said, “My first thoughts were as described. My second was that it might be Hudlar males rather than females, or perhaps both, who wear decorative paint. Then I observed that the being’s movements were careful, as if it was afraid of injuring nearby people and equipment, the movements of a gentle being of immense physical strength. That taken in conjunction with the low, squat form of the body, with six rather than two or four limbs, suggested that it was a native of a dense, heavy-gravity world with comparable atmospheric pressure, where an accidental fall would be damaging. The very hard but flexible skin, which is unbroken by any permanent body orifices for the intake or elimination of food, suggested that the paint which I had observed the Hudlar spraying onto itself might be a nutrient solution.”
The eyes of Cresk-Sar, and the variegated visual sen-sors of the other trainees, were watching her steadily. Nobody spoke.
Hesitantly she added, “Another thought, wonderful and exciting but, I expect, pure supposition, is that if this heavy-gravity, high-pressure creature can live unprotected in the hospital surroundings, its body must be capable of containing its own very high internal pressures, and an even lower pressure environment should not inconvenience it …
“It might be possible,” she went on, expecting a storm of ridicule from the Nidian Senior, “for it to work unprotected in space. This would mean that—”
“At any moment,” Cresk-Sar said, holding its hand up, “you will give me its physiological classification coding, even though we haven’t covered that yet. Is this the first time you’ve seen a Hudlar?”
“I saw two of them in the dining hall,” she replied, “but at the time I was too confused to know what I was seeing.”
“May your confusion continue to diminish, Cha Thrat,” Cresk-Sar said. Turning its head toward the others, it went on, “This trainee has displayed the qualities of observation and deduction that, when trained and refined, will enable you to live among, understand, and. treat your other-species colleagues and patients. However, I would advise you not to think of a particular life-form as a Nidian, a Hudlar, a Kelgian, a Melfan, or a I Sommaradvan, that is, by their planets of origin, but by their physiological classifications, DBDG, FROB, DBLF, ELNT, or DCNF. That way you will always be; reminded of their pressure, gravity, and atmosphere requirements, basic metabolism and other physiological needs, and know immediately when there is a potential environmental threat to them or to yourselves.”
It continued, “Should a PVSJ, a chlorine-breathingnative of Illensa, accidentally rupture its pressure envelope, the risk to the being concerned and to any oxygen-breathing D, E, and F prefixes in the vicinity would be extreme. And, if you are ever called to a space rescue situation, there may be times when an urgent and accurate identification of the casualty’s physiological classification, and therefore its life-support requirements, may depend on a single limb or small area of body surface glimpsed under shifting wreckage.
“You must train yourselves to be aware, instinctively, of all the differences of the people around you,” Cresk-Sar went on, giving a low laugh-bark, “if only to know whom it is safe to jostle in the corridors. And now I will take you to the wards for your initial patient experience before my next class in—”
“What about the classification system?” said the silver-furred Kelgian — the DBLF, Cha Thrat corrected herself — beside her. “If it is as important as you say it is, surely you are lacking in the qualities of a teacher not to have explained it to us.”
Cresk-Sar walked slowly toward the speaker, and she wondered if she could possibly reduce the verbal violence to come by asking the Senior Physician another and more politely worded question. But for some reason the Nidian completely ignored the DBLF and spoke instead to Cha Thrat.
“You will already have observed,” it said, “that these Kelgian DBLF life-forms are outspoken, ill-mannered, rude, and completely lacking in tact …”
You should talk, Cha Thrat thought.
“… But there are good psychophysiological reasons for this,” it went on. “Because of inadequacies in the Kelgian speech organs, their spoken language lacks modulation, inflection, and all emotional expression. But they are compensated by their highly mobile fur that acts, so far as another Kelgian is concerned, as a perfect but uncontrollable mirror to the speaker’s emotional state. As a result the concept of lying, of being diplomatic, tactful, or even polite is completely alien to them. A DBLF says exactly what it means or feels, because the fur reveals its feelings from moment to moment and to do otherwise would be sheer stupidity. The opposite also holds true, because politeness and the verbal circumlocution used by many species confuses and irritates them.
“You will find some of the personalities here as alien as the persons,” it continued. “Considering the fact that you have met only one other-species being before your arrival here, your behavior today makes me sure that you will have not trouble in adapting to—”
“Teacher’s pet,” the DBLF said, its fur tufting into spikes. “I was the one who asked the question, remember?”
“That you did,” Cresk-Sar replied, looking at the wall chronometer. “Tapes covering the life-form physiological classification system will be sent to your quarters sometime today. You must study the visual material they con- | tain, carefully and repeatedly, and use your translators on the spoken commentary. But now I have time only to outline the basics of the system.”
It turned suddenly and resumed its place facing them, > Plainly the answer to the question was being directed,! toward everyone.
“Unless you have already been attached to one of the smaller, multienvironment hospitals,” Cresk-Sar said, “you will normally have encountered off-world patients one species at a time, probably on a short-term basis as a result of a ship accident, and you would refer to them by their planets of origin. But I must stress once again, the rapid and accurate identification of incoming patients isvital, because all too often they are in no condition to furnish the necessary physiological data themselves. Here we have evolved a basic, four-letter physiological classification system that enables us to provide the required life-support and initial treatment pending a more detailed investigation, if that should be necessary, by Pathology. It works like this.