Except when it comes to people, they're mostly right. People, especially in groups, are much more likely to act on their perception of reality than they are on reality. This seems especially true to me when it comes to electoral politics.
No, sadly they're not right, but I agree there is a lot of truth in what you say.
Almost invariably when I've been around that type of salesmen they've had some success. They're told that their job is to sell, and they do. A large component of their pay comes from commission. They have weird cultish sessions where guys who wear suits and ties to work convince themselves they're 'wolves' and that there are only two sorts of people in the world - people who sell, and people who wish they could sell.
(I've had the joy of attending large internal sales conferences as one of a handful of product experts a few times...it was hard to work out if we were the goldfish, or they were, but there was some confusion...!)
Ultimately, perception is reality in terms of convincing people of things. Of closing, whether in business or...it seems...politics.
But one day the salesman walks off to his next gig, and what's left is most definitely reality.
Sorry...feeling a little maudlin tonight.