The six o’clock tour made it all the way to the photon slide before the spirit struck. The first sign that it had entered the Byte of the Future computer system was when the music and holograms in the transparent tube faltered to a halt. Next, the overhead lights began to flicker. In rapid succession, a number of displays blinked out. The ventilation system blasted out a jet of overheated air, then made a grinding noise as its rotors shut down, and the speakers began to hiss with static.