I posit that there need to be some secrets. Would it make sense to broadcast to everyone in the world, 'I had surgery on my head years ago, and if you hit me r

I posit that there need to be some secrets. Would it make sense to broadcast to everyone in the world, 'I had surgery on my head years ago, and if you hit me right here, I'll die'? Of course not. Communications maps, I think, are legitimately one of those secrets, for so long as they offer a significant advantage to an adversary.