Chapter 21

The way the mask's surface coloration could change when the wearer's emotions changed was perhaps the most amazing miracle of all. He had seen the guard's color come and go, had watched him redden with anger and then grow pale. It could only mean that there was some mechanically symbiotic, emotion-sensitive electronic coating or skin surface, or series of tubes on the inner surface of the mask, which could simulate actual blood flow much like a network of tiny heat regulators. This network would be so responsive to…