Meaning, Wahram thought, that right now somewhere in the system there could be machines in human form, escaped into the crowd, doing their best to stay free, perhaps, when any X-ray machine or other surveillance device would reveal what they were--out there hiding, trying to accomplish the goals they had been given, perhaps, or new ones they might choose for themselves, according to some self-invented algorithm of survival. Damaged, dangerous, detached from any other consciousness, solitary and afraid--in other words, just like everyone else.