Why German cruiser designers overengineered

Why did German cruiser design shift from weight-saving triple turrets to heavily built twin-turret solutions?

Navies make leaps conservatively, and German designers had unusually strong incentives to overengineer systems so failures could not be blamed on them.

Even innovative navies seek ways to retreat from an unsuccessful leap. German designers added engineering margin because a failure could carry serious personal consequences under both Weimar and Nazi governments. Those organizational incentives shaped displacement, complexity, and reliability long before a ship entered service.