 Why did Svan smile when he was getting ready to leave them?
Svan was the leader making the final plans—plotting them a bit too well. The Officer of the Deck was pleased as he returned to the main lock. The Executive Officer was moodily smoking a cigarette in the open lock, staring out over the dank Venusian terrain at the native town. "Everything shipshape, I take it!" "Every man accounted for except the delegation, cargo stowed, drivers ready to lift as soon as they come back." But after all, they're human beings, just like us—" "Not any more. Four or five generations ago they were. "They had to acclimate themselves to Venus's climate. He stared at the wooden shacks that were the outskirts of the native city, dimly visible through the ever-present Venusian mist. The native guard of honor, posted a hundred yards from the Earth-ship, stood stolidly at attention with their old-fashioned proton-rifles slung over their backs. A few natives were gazing wonderingly at the great ship, but made no move to pass the line of guards. They think there will be hordes of immigrants from Earth, now that we know Venus is habitable. That's a basic law of—" The annunciator over the open lock clanged vigorously, and a metallic voice rasped: "Officer of the Deck! "From their own mouths you have heard it. Svan laughed harshly. " Therefore, it must not return." "The Council did not know what we would face. There will be danger, I think...." She shook them out and handed the bowl to Svan, who was rapidly creasing the six fatal slips. The bowl went the rounds, till Svan himself took the last. Svan, too, had left his unopened. "We will go, all six of us, in my ground car, to look at the Earth-ship. There will be commotion—that is easy enough, after all; a hysterical woman, a few screams, that's all there is to it. And the sixth person will have his chance to steal to the side of the ship. It will not be noticed in the dark—they will take off before sunrise, because they must travel away from the sun to return—in forty hours the danger is removed." There was comprehension in their eyes, Svan saw ... but still that uncertainty. Instinctively they had opened the slip, turned it over and over, striving to detect if it was the fatal one. Svan waited impatiently for the chosen one to announce it—a second, ten seconds....
 He was glad the others were going to blow up soon
 He knew they would be safe, since he was doing the dangerous job  He was glad the others were going to blow up soon  He was excited to follow through with his plan  He had feelings for Ingra