"Yes, I’d say they did a pretty good job of wiping themselves out..." I sat back and ran a hand through my hair—a nervous habit that, even as a replicant, I couldn’t get rid of. "... or so close to it that we can’t tell the difference. There’s just that one group of reactor signatures system-wide. I can’t even assume that those indicate humans. Could be robotic systems that haven’t gotten the memo yet."