"Local variations in gravitational gradient exceeding 0.0003 m/s² may induce a precession torque on the gyroscopic element. The CMZ 700 will reject up to 0.0005. Beyond that, output is undefined."

The error did not vanish.

"This instrument is designed to find north. It is not designed to understand why north moves."

Saito took it to his cabin. He was a man who read manuals the way priests read sutras—for doctrine, for loopholes, for the hidden warnings between the lines.