Some people are born without common sense but an obscene amount of wealth. At the end of the day, we are only human and, as such, are direct products of the environments in which we were raised. Whether or not you have common sense, if you've never had to pay for, say —a sandwich — in your entire life; then you're not going to have any life experiences, or even a frame of reference, for what a sandwich costs when you finally do need to pay for one. This seems absurd to the rest of us, but it's…