 What is the significance of the title of the story?
The sight of an Earthman on Vega III, where it was impossible for an outlander to be, brought angry crowds to surround John Crownwall as he strode toward the palace of Viceroy Tronn Ffallk, ruler of Sector XII of the Universal Holy Empire of Sunda. He ignored the snarling, the spitting, the waving of boneless prehensile fingers, as he ignored the heavy gravity and heavier air of the unfamiliar planet. But here, surrounded by this writhing, slithering mass of eight-foot creatures, he felt distinctly unhappy. These humanoids had large mouths and sharp teeth, and they unquestionably slavered. If they carried out the threats of their present attitude, Earth would have to send Marshall to replace him. He climbed the great ramp, with its deeply carved Greek key design, toward the mighty entrance gate of the palace. The clashing teeth of the noisiest of them were only inches from the quivering flesh of his back as he reached the upper level. Instantly, and unexpectedly to Crownwall, the threatening crowd dropped back fearfully, so that he walked the last fifty meters alone. A pair of guards, their purple hides smoothly polished and gleaming with oil, crossed their ceremonial pikes in front of him as he approached the entrance. "And just what business do you have here, stranger?" asked the senior of the guards, his speaking orifice framing with difficulty the sibilances of Universal Galactic. "If you mean His Effulgence, Right Hand of the Glorious Emperor, Hereditary Ruler of the Seventy Suns, Viceroy of the Twelfth Sector of the Universal Holy Empire"—Universal Galactic had a full measure of ceremonial words—"he sees only those whom he summons. If you know what's good for you, you'll get out of here while you can still walk. "Just tell him that a man has arrived from Earth to talk to him. An elegant courtier, with elaborately jeweled harness, bustled from inside the palace, obviously trying to present an air of strolling nonchalance. His Effulgence commands you to appear before him at once."
 It points to how the alien races see the humans
 It reinforces the importance of engine technology in space travel  It refers to the way the Vegans rule their territories  It hints toward the types of political negotiations that will happen  It points to how the alien races see the humans