Designing something involves a sequence of steps. There are infinate possible ways to build a chair, for example. Figuring out how it will look and how it will be constructed is often times more difficult than actually constructing it. The designer must think about how it’s built, what it’s made of, how it’s used, and so on.
I love how an idea becomes a sketch, a sketch becomes a model, a model becomes a prodotype and then you have a final piece. This is a table design I’ve been thinking of for a couple months. Finally got it drawn up in Rhino 3D.