What If Humans Never Tamed Fire?

Amara retired from fieldwork in 2031, the *koroensis* monograph her last major publication, and spent her final years as a lecturer rather than an excavator. Students sometimes asked her, in the pattern every popular-science account of the find seemed to invite, what she thought *koroensis* would have become if they'd simply discovered fire a little sooner — if some ancestor, one dry season, had carried home a single smoldering branch instead of watching the wildfire pass.

She had learned to resist the question's easy appeal, the same way she'd learned to resist the easy ending to their extinction. "I used to think I'd answer that with a better human," she told her last graduate seminar, in the recorded lecture that would later open every documentary made about the find. "Bigger bands, bigger brains, maybe they get to where we are, just on their own valley's schedule instead of ours. But I don't actually know that. Maybe the fire goes out the first night. Maybe it takes them somewhere stranger than us entirely, down a branch we can't even imagine from here, because we've only ever had the one fire to measure by."

She paused, in that recording, long enough that the silence became part of what students remembered. "That's the real lesson of this valley," she said finally. "Not that fire made us special. That we have no idea how many ways there were to be human, and we only ever get to study the one that happened to work."