 What is the central irony of Quest's last words in the story?
“If Dr. Mansard succeeded in landing on Jupiter, why didn't anyone ever hear from him again?” she demanded. Her employer had impressed upon her that her mission was confidential, but surely Dom Blessing could not object to Dr. Mansard's son knowing about it. All these things had happened before she was born, and she did not know what Dom Blessing's relation to Dr. Mansard had been, but it must have been very close. Dr. Mansard and his wife had disappeared into the turbulent atmosphere of Jupiter just after his invention of the surgiscope, and it had been developed by Dom Blessing. Because of this, Trella was tempted to tell Quest the good news herself; but she decided against it.
 He claims that "androids are made" to justify his human status, disregarding the impact of his father's programming efforts
 He claims that "androids are made" to justify his human status, disregarding the impact of his father's programming efforts  He declares that "androids don't grow up," when in reality, his father programmed him to appear to (physically) age  He states that he "remembers his boyhood on Jupiter," when in reality, he is still a boy  He says he "remembers his boyhood on Jupiter," when in reality, his memories were programmed into his brain