Bo was wearing the flimsiest kind of blue paper mask. He reached up with the same elaborate precision as was used to handle the tea and unlooped it from one ear, letting it dangle from the other. Hard to drink tea otherwise. According to PanScan he was a cipher, a ghost. Its neural nets could discern that a human-shaped object was over there, but otherwise drew a perfect blank. Willem sighed and took his helmet off. Then he shrugged out of the reflective vest. Bo made the slightest eye-flick toward a minion, who rushed forward to assist, as if Willem were a grand duchess struggling to get out of her mink coat in the lobby of an opera house. A coat hanger was somehow conjured up and the vest ended up hanging from the awning’s edge to air-dry. Bo regarded it with amused curiosity, then raised his tablet and snapped a picture of it. "ERDD," he said.