At the start of the process the idea is just a thought - very fragile and exclusive. When the first physical manifestation is created everything changes. It is no longer exclusive, now it involves a lot of people.
Jonathan IveIf something is going to be better, it is new, and if it's new you are confronting problems and challenges you don't have references for.
Jonathan IveIn our quest to quickly make three-dimensional objects, we can miss out on the experience of making something that helps give us our first understandings of form and material, of the way a material behaves--'I press too hard here, and it breaks here' and so on. Some of the digital rendering tools are impressive, but it's important that people still really try and figure out a way of gaining direct experience with the materials.
Jonathan Ive