““Turn it off,” muttered Aribald. The orderly on duty, an unshaven man with dull eyes, obediently clicked the switch on the mnemograph console. Aribald’s assistant, a very young elf named Feinamiel, looked sadly towards the translucent wall, behind which the most interesting man was raving patient. The patient's name was Ivan, but the elves preferred to call him Ivan. According to the dossier from the medical history, before the elves returned to Earth, he was a radio physicist, but at the moment he imagined himself as a tailor. The translucency of the wall was as follows: the elves and the orderly from the control room perfectly saw everything that was happening in the ward, but the patient could not see them, so it would be more correct to call the wall one-sided transparent. At the moment, nothing interesting was happening in the ward: Ivan was lying on his bed, completely passed out, and had not moved once in the last half hour. He had the most amazing delirium, like today, for example...”