Robot Adept by Piers Anthony

snapped. “Come in front of the desk where I can see you.”
    Fleta stood and went around to the front. Serfs were not supposed to answer Citizens unless an answer was called for, and Tania was to be treated like a Citizen.   “Turn around.”
    Fleta turned, while the woman’s eyes probed her body. “You aren’t very intelligent,” Tania remarked.   Fleta was tempted to reply that most animals weren’t, but stifled it. Mach had explained that she was passing for an android, and that few androids approached the human level of mental performance.
    “What is the nature of ultimate reality?” Tania asked.   Fleta stared at her, needing no effort to feign confusion. She smiled and looked blank in the approved manner.
    “Should I ask the screen, Tan?” she asked at last.
    “Don’t bother, android.” Tania glanced around the office. “Robot, come forth,” she commanded.   Mach stepped out from his alcove, silently. She eyed him as she had Fleta.
    “Have you kept this office clean?”
    “Yes,” he said.
    “Did you hear me tell the android to call me Tan?”
    “Yes.”
    “Well?”
    Mach didn’t answer. Fleta had to suppress a giggle; he was playing dumb. Tania had not asked a comprehensible question, so he hadn’t answered.   “Address me as Tan,” she said coldly. “Is that a functional penis?”
    ‘In what manner, Tan?”
    ‘Sexual.”
    ‘Yes, Tan.”
    ‘What’s it doing on a menial?”
    ‘Whatever my employer directs, Tan.”
    ‘Android,” Tania snapped without turning. “Put in for a replacement menial robot. This one’s too smart.” Oops, trouble! If they replaced Mach, how would she get by? But she had no choice. She returned to the desk, sat, and addressed the screen. “Requisition replacement menial rovot for Citizen Tan, this office,” she said, perversely pleased that she had managed the strange formula without hesitation.
    “Requisition entered,” the screen replied. “Allow forty-eight hours for delivery.”
    Tania was already on the way out. In a moment they were alone again.
    Mach said nothing. He simply marched back to his alcove and resumed his inert stance. By that signal Fleta knew that it was not safe to talk. He knew when they could be overheard; she depended on his judgment.   She had passed Tania’s inspection, but Mach had not!
    What an irony! Then she had to stifle another giggle: irony for a metal man! But she was not happy.   But as she pondered the matter further, she realized that the Contrary Citizens were closing in, and so there would be trouble within two days anyway. This might make no difference. They would have to get away from here before Mach’s replacement came.
    She finished out the day, answering the occasional incoming calls in the routine manner: Yes, this was Citizen Tan’s office. No, the Citizen was not available at the moment. Yes, she would enter a message for the Citizen, and he would return the call if he wished to.   When she was hungry, she ordered Mach to fetch her food from the food machine. As an android she ranked the robot, and naturally used every bit of what little authority she possessed. This nicely concealed the fact that she still had no idea how to use the food machine.   Mach had set that up, too. She wished she could hug him. Instead she set some food on the desk, and took a careful bite, so as to seem to be eating normally; the rest she put on the floor, so she could melt her feet over it.
    Proton was a dreary frame! No wonder Mach liked Phaze better!
    In the evening, when the office officially shut down for the shift, Mach came out. He checked to be sure they were not being spied on, then opened his arms.   She hurled herself gratefully into them. “Methinks the boredom be the worstest torture o’ all!” she whispered.  
    “You did well,” he murmured. “I only hope Tania didn’t notice your one slip.”
    She felt a chill. “Slip?”
    “You referred to me as a ‘rovot.’ The screen has an interpretation