“No,” Elara replied, stepping back toward the acid bath, which she now realized was her only escape. “I’ve destroyed one path. There will be others. Better ones. Ones that don’t ask us to stop being human.”

She leaned back, her reflection ghosting over the screen. At forty-seven, she already saw the fine lines around her eyes and the gray threading through her auburn hair. The temptation was a physical ache in her chest. But Elara was a scientist first. Safety. Replication. Toxicology. She had protocols.

The second anomaly was worse. When Elara sequenced the RNA of Tess’s brain, she found that Triazolen had not stopped at repairing senescence. It had begun optimizing. Synaptic connections were rewired for efficiency—but efficiency at what cost? The neural pathways for fear, for risk, for the messy emotional calculus that made life worth living, had been pruned back to a stark, cold logic.