I think in some municipalities you can walk down to the planning and get most the blueprints you would like. Where you can't it is partially because the analog

I think in some municipalities you can walk down to the planning and get most the blueprints you would like. Where you can't it is partially because the analogy breaks down physical is slightly reduced by openness, its allows attackers of all kinds to plan better. More manpower can be focused to overcome and issue and a map is force multiplier. Security in information systems is strictly increased, because the flaws exist open or close, but when exposed in the open they are closed forever to all attacker regardless of manpower.