"You do not read what I have said quite correctly," replied Qril. "The evil atmosphere is left by the man, because what he did was evil by his own standards. I said only that he attempted to do things wrongly."
"What do you mean?" asked Maya.
"To explain to you, I must speak to you about things about which you already know partially," answered Qril. "Before you were born, the human you call Goat was one of a group of humans who sought ways to make humans independent of the spaceships which bring materials from Earth to Mars and create small islands of terrestrial conditions in the midst of the Martian environment. When they met the natural resistance of those humans who gain material advantage through operation of the spaceships, they came into the desert to be free to work.
"Seeking to get far from the men who resisted their work, this group of humans went to that area which you know as the Icaria Desert. Some of us who are children of the past live at that place sometimes, and these humans sought our help, knowing that we possess many remnants of the knowledge that our forefathers had.
"But we had difficulty helping them. They were attempting to follow two courses simultaneously, and both of them were wrong."
"I know something of those two courses," said Maya. "Some of them were trying to develop human extrasensory powers so that materials could be teleported from Earth, and the others were trying to change the human body physiologically so that humans could live under Martian conditions. But you say they were both wrong?"
"In each way that they followed, they sought to make humans partly like us, the children of the past," said Qril. "We have the power to communicate with our minds over a distance, and some of us are able to transport things with our minds over a distance. We do not need your rich terrestrial air, because we take oxygen directly from the soil and store it in our bodies for combustion purposes.
"But humans and the children of the past are different forms of life, and they cannot be made so much alike. It is possible for humans to develop mental powers similar to ours, but this course would leave them dependent upon importing materials from Earth, even though this would be by mind transmission instead of by spaceship. The other course they followed could not succeed, because the human body cannot be altered so that it is able to take oxygen from the soil and store it for later use."
"But you're wrong!" exclaimed Maya. "Goat Hennessey had succeeded in developing some humans who could live without oxygen in the air for a time. His experiments were imperfect, it's true, but they were able to do that."
"The imperfect humans that the human called Goat had developed were not what he thought," replied Qril. "We tried to help the humans to find the right course, but they could not understand us well. We tried to show them, by charts and example, that the proper way to adapt a human to Martian conditions was a different way.