As a former retail sales manager and store manager I can tell you that any salesperson who is not an expert on their product will not be able to effectively sell their product. If you're on commission and you don't know everything there is to know about what you're selling, then the message you're sending me is that you're lazy and you're going to cost me sales. You'd quickly find yourself out of a job if I'm the manager. At the same time, any salesperson who sits around chatting with someone who is clearly not going to make a purchase TODAY is also costing me sales (unless there's no one else in the store). Cultivating a 'business friendship' may net you 3 sales a year that you wouldn't have had, but it represents a huge expenditure of time that is should have been spent on customers that are looking to make a purchase that day. It probably cost you more than 3 sales creating that 'business friendship' because other customers in the store were either left alone or went to another salesperson. COFFEE IS FOR CLOSERS.