The collapse on Avenue Victor Hugo was repaired the next day. The cause? A forgotten 2018 utility trench, poorly backfilled. The data had been there all along—frozen, silent, incompatible.

Lena now has a sticky note on her monitor: “Covadis 16 is backwards compatible. Your workflow is not.”

“The 2018 file was made with Covadis 15,” his junior technician, Lena, said, peering over his shoulder. “We’re on Covadis 16 now, with AutoCAD 2024. It should work. Should. ”

Lena ran a diagnostic using Covadis 16’s “Audit de Dessin” tool. The results flashed red: “34 Covadis 14 objects detected. 12 orphaned attributes. 1 corrupted terrain model reference.”