In most cases, however, we know the target market very well-first in finding their problems to solve, later in asking if our new product concept meets their need and seems reasonable to them, and still later in screening factors (e.g., do we have a sales force that can reach them or will we have to build a new one?) Perceptual and preference mapping techniques we discussed in earlier chapters can be very helpful in developing this part of the protocol, as benefit segments will have been identified and their specific needs will be understood.