I am not a security expert, but we accept imperfection in everything. We do not know that the bridge we are on will not fall down. We do not know that the airc

I am not a security expert, but we accept imperfection in everything. We do not know that the bridge we are on will not fall down. We do not know that the aircraft we are on will not fall out of the sky. We do not know that we will not be misdiagnosed by a doctor. Most "obvious" processes and procedures had to have a body count behind them to get implemented.