Pretending to examine one of these state-of-the-art computers, Carla fished the datachip out of her pocket and slotted it into one of the multi-ports at the back of the deck. The program on it had been hurriedly designed, that very afternoon, by Corwin. Precisely one hour after it was installed, it would write itself onto the virtual memory of this computer. It would then execute in the background, uploading itself to the display hall’s central processing unit while it was running its batch maintenance programs. The system’s operator might notice a slight stutter in the computer, but would probably pass it off as a hardware sequencing problem.