That is way too logical, that is where the problem is. The delivery driver didn't end up being a delivery driver by virtue of literacy and logic. You have some

That is way too logical, that is where the problem is. The delivery driver didn't end up being a delivery driver by virtue of literacy and logic. You have something tantamount to public/private key cryptography going on there! Back to the video, I observed that a lot of the thieves talk to themselves out loud. They probably refer to themselves in the third person when talking to someone. Clearly they can't think before they open their mouths, something people should master being able to do as a ten year old. Maybe the only time they think is when they open their mouths, thinking and talking being the same thing to them. If the secret shadowy people that rule the world in some conspiracy really had plans to depopulate the world then they should get the NSA to track everyone that talks to themselves, select these folk for the depopulation program and then this theft from doorsteps problem would be gone.