Objectives, functions, characteristics v.s. alternative solutions
lPreviously, problem was clarified by use of four design tools
»Objectives Tree:  A way to analyze customer needs and to group them logically
»Functional Model:  An engineering first step at thinking about the general functions that the device must be able to do
»Engineering Specifications: A first step to specifying  performance of the product or process to be designed
»The Quality Function Deployment Method – Design Matrix:  
Tool which helps to specify what the product must achieve and the criteria by which the alternative solutions will be judged.
lThese clarify the problem - they do not give the solution