Door to door sales is tough. I've tried it, I'm writing this, so obviously I was no good at it.
It was the most educating and humiliating experience wrapped in one.
So when we learn, as highlighted on Saturday's front page, about slightly dubious sales tactics aimed at the elderly, I tend to reflect on the company and its owners rather than the sellers.
The sellers are often simply looking for an opportunity to make money - if you sell door to door you are willing to try anything legal to make money for yourself and your family.
And generally, you will have been trained and indoctrinated in techniques sanctioned by the company you are working for.