But the final one came at twilight.
They went on. Elara set a single piston to lift a cup of tea. Not fast. Not powerful. Just steady . The piston rose one millimeter per second. The tea did not slosh. The cup did not rattle. At the top, the piston held for ten seconds, then descended just as slowly. Achievement unlocked: Move a mass of one kilogram at constant velocity with less than one decibel of audible mechanical noise.
"Lovely," whispered Joric. He was no longer just scribing. He was listening.
"I see," she said.