The answer is in the complexity in creating secret technology that is also foolproof.<p>To make a car analogy, we can make a submarines that are waterproof, and we can make cars which looks like a car and you can drive on the road. However, to make a car that is also a submarine is quite hard, and close to impossible if you also had to make it look like a normal car. It would even be harder if it need perfect obscurity so that you couldn&#x27;t even tell if you opened up the hood or started to disassemble the car.