Fisher and German warship misdirection

Why did German planners misread British dreadnought and armoured-cruiser development so badly?

The error is attributed directly to Jackie Fisher's deliberate efforts to make sure German planners got it wrong.

The audience asks why German planners misread British dreadnought and armoured-cruiser development. The answer is blunt: Jackie Fisher deliberately worked to ensure they did. The exchange assigns importance to deception and competitive signalling rather than simple German technical incompetence. The mechanism is not expanded here, so the value lies in the clear attribution rather than a complete account of Fisher's methods.