Julian Cobb — retired ship designer with three decades at Deimos shipyard, credited on hull work going back to the early Pathfinder-class fleet. Appeared on Martian Radio’s “Red Static” in 2135 to assess The Ark’s technical circular five years after its announcement. Praised the stationary-spindle design and Kuzmin propulsion choice; flagged magnetic thrust bearings at century-scale duration and the dual-reactor problem as unresolved. Core objection: build it as an in-system station instead — same engineering, actual immediate use. Host Katya Steshenko countered that distance from UN/CAI jurisdiction was the point.