Maybe a mandatory retirement age or at least eye sight testing. At my old house, we had an old postman that hit more mailboxes than he delivered to. He argued with me once telling me that I wasn't who I am, that I was someone that hadn't lived in that house since the 70's... Refused to deliver mail that didn't have that name on it...That, and IQ testing, would sure be a step in the right direction!!
Andria