First of all I'd like everyone to take a sec and think about who your customer is. As in who do you provide velue to. It isn't about who is paying to you. For example a teachers customer is not the school. School is a "secondary customer" in terms of value.
Now once you have your ideal and or worst case scenario customer in mind think again. Do you deliver. This is an easy question when you think about it for a while. If the customers you serve seem to be confused or ask a lot of questions it's usually a sign of not delivering. Also note that some times the customer is blinded by the execution of your work that they don't care about delivery. But in the long run they'll start to think about it also.
So next time you are with a client/customer ask this question: "Did I tell you clearly what we are delivering to you?" If the customer can't give you a good answer you could've done better. But if they give you a good answer you've reached the point below...
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