CONCLUSION: Many relate to the two-step process for making decisions: knowing and doing. You "know" something from past experience, case study or a best practice – and then you "do" something. While this method results in to "what is" or " what was" the design solution to "what could be" is impossible without the process of design.
To generate new ideas the design process inserts a middle step: MAKING - Through the act of prototyping-using sketching, models, maps, mock ups, simulations- the MAKING step puts options on the table that weren't there before. It shifts the emphasis from 'deciding' the future to 'designing' the future.