Some dude says this here
"If you believe that customers are responsible for defining their requirements, you will primarily employ interviewing and 'elicitation' techniques to obtain requirements. The definition of elicit is 'to draw or bring out or forth; educe; evoke.' The customer often perceives this as 'extraction' or even 'extrusion.' Using this method, you are at your customers' mercy--you know only what they tell you. Requirements will almost certainly be incomplete. Even if customers appear unable to define their requirements, you may believe that they are not only able to do so, but that they are responsible for doing so. You may believe that the correct elicitation tools and techniques will achieve success."
It sounds like he's saying customer's don't know what they want. I agree that is frequently the case. Showing them "concepts" can help them see what a potential solution looks like.
"If you believe that customers are responsible for defining their requirements, you will primarily employ interviewing and 'elicitation' techniques to obtain requirements. The definition of elicit is 'to draw or bring out or forth; educe; evoke.' The customer often perceives this as 'extraction' or even 'extrusion.' Using this method, you are at your customers' mercy--you know only what they tell you. Requirements will almost certainly be incomplete. Even if customers appear unable to define their requirements, you may believe that they are not only able to do so, but that they are responsible for doing so. You may believe that the correct elicitation tools and techniques will achieve success."
It sounds like he's saying customer's don't know what they want. I agree that is frequently the case. Showing them "concepts" can help them see what a potential solution looks like.
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